Terraria Bosses

1. #1The Forest

   Keys: Werewolf, Blue Slime, overworld, Raven, Zombie, Wraith, Hoppin' Jack, Forest, Wandering Eye, Possessed Armor, Demon Eye, Green Slime, Purple Slime, Pinky

   Enabled · After character · Order 10 · 100%

   Entry settings

   The Forest is a biome that comprises the majority of the surface world and is typically where the player initially spawns. The global landscape of a Forest includes lots of grass, plenty of trees, lakes of various sizes, and occasional hills that can reveal cave entrances. Forests often contain one or more Living Trees that sometimes have an underground treasure room. Any overworld area that isn't Space, Desert, Jungle, Corruption, Crimson, Snow, or Ocean is considered part of the Forest biome. Enemies that spawn in The Forest include: Green Slime, Blue Slime, Purple Slime, Pinky (Rare Spawn), Enemies that only spawn at night (Zombie, Demon Eye, and Raven (During Halloween)). Enemies that spawn in The Forest in hardmode include: Enemies that only spawn at night (Possessed Armor, Wandering Eye, Wraith, Werewolf (During Full moon), and Hoppin' Jack (During Halloween)).

2. #2Slime Rain

   Keys: Slime Rain

   Enabled · After character · Order 10 · 100%

   Entry settings

   Slime Rain is a minor event that consists of frequent spawns of Green, Blue, and Purple Slimes, and rarely Pinky. During the event, all slimes spawned will exhibit hostile behavior towards the player, unlike naturally spawned slimes. Defeating 150 slimes during the event will cause King Slime to spawn. Slime Rain always occurs randomly, signaling its beginning with the status message "Slime is falling from the sky!". It normally lasts between 9 minutes and 15 minutes, though it will end immediately when King Slime is defeated. The status message "Slime has stopped falling from the sky." appears when the event ends. Slime Rain cannot occur if another event is already occurring. A Slime Rain can only occur between 4:30 AM and 12:00 PM. It has a chance of 3/25 (12%) each day. The chance is decreased in Hardmode, as well as if King Slime has already been defeated.

3. #3King Slime

   Keys: King Slime, Slime Crown

   Enabled · After character · Order 10 · 100%

   Entry settings

   The King Slime is a pre-Hardmode boss. His appearance is that of a massive Blue Slime wearing a jeweled golden crown. The King Slime can be summoned by using slime crown, made by combining 99 gel with a gold or platinum crown at a demon or crimson alter. An alternative method for summoning him is to defeat 150 slimes during the Slime Rain event. He also has a very rare chance of spawning in the outer lateral sixths of the map, during daytime, and only on grass. As King Slime takes damage, he will spawn ordinary Blue Slimes and Spiked Slimes, and will also shrink in size. It has the basic attack pattern of bouncing towards the enemy, it's main damage source being contact damage. Occasionally, after a few bounces, it will teleport either in front or behind {{user}}.

4. #4Eye of Cthulhu

   Keys: Eye of Cthulu, Suspicous Looking Eye

   Enabled · After character · Order 10 · 100%

   Entry settings

   The Eye of Cthulhu is a pre-Hardmode boss. It is one of the first bosses {{user}} may encounter, as it spawns automatically when a relatively early level of game advancement is achieved. It's appearance is that of a giant eyeball, but when it enters it's second phase, the eye will be ripped off iris will be shredded into a mouth. The Eye of Cthulhu can be spawned manually by using the Suspicious Looking Eye at night. This can be crafted by using 6 lens' at a demon or crimson alter. It can also spawn naturally at night. You will know if it is when 'You feel an evil presence watching you...'. The Eye of Cthulhu has two phases. During Phase One: It will attempt to hover over {{user}}, and will spawn Servants of Cthulhu (tiny floating eyeballs) to attack {{user}}. Afterwards, it will charge at {{user}} three times in succession, before repeating the cycle. When the Eye of Cthulhu falls below 50% health, it spins in place and transforms into its second form (shedding its iris into a mouth), and spawn an extra 4-5 Servants of Cthulhu when transforming. The Eye of Cthulhu will ram into {{user}} more aggressively three times, then hang in the air for a short period. The Eye of Cthulhu no longer spawns Servants of Cthulhu and has no defense, but now has increased contact damage and is much faster. However, the Eye of Cthulhu can only be fought at night time. When it reaches Dawn (4:30 AM), if it has still not been defeated, it will despawn, disappearing from the world.

5. #5Snow Biome

   Keys: Frozen Zombie, ice, tundra, Ice Golem, Snow, Ice Elemental, Wolf, Ice Slime

   Enabled · After character · Order 10 · 100%

   Entry settings

   The Snow biome, also known as the Tundra, is a Surface biome that takes on an arctic appearance with its constant snowfall, its ground made of Snow and Ice Blocks, and its boreal trees. The biome is always found in the direction of the Dungeon, opposite the Underground Desert and Jungle. Specific features of the Snow biome include a different water color and a snowscape background. Boreal trees and Shiverthorn frequently grow in the snow. During rain, the biome undergoes a blizzard, decreasing visibility. The trees in the biome can appear to be pines, snowy evergreens, or leafless trees, but they always yield Boreal Wood when cut down. Acorns placed on Snow Blocks always grow into boreal trees. The Corruption, Crimson, and Hallow can overtake this biome through its Ice Blocks, either upon world generation or thanks to improved biome spread in Hardmode. Enemies that spawn in The Snow biome include: Ice Slime, Frozen Zombie (At night). Enemies that spawn in The Snow biome in hardmode include: Ice Golem (Rarely, during a blizzard), Ice Elemental (At night), and Wolf (At night)

6. #6Eater of Worlds

   Keys: Shadow Orb, Worm Food, Eater of Worlds

   Enabled · After character · Order 10 · 100%

   Entry settings

   The Eater of Worlds is a colossal worm with eyes along it's body. It spawns once after every third Shadow Orb is broken in the Corruption, or after Worm Food (Crafted with 30 Vile Powder and 15 rotten chunks at a Demon or Crimson alter.) is used. The Eater of Worlds can only be summoned and fought in the Corruption, and can be summoned at any time of the day. If it manages to escape the Corruption, it will flee and despawn. The Eater of Worlds is a large worm-type enemy that travels through floors and walls, and is made up of multiple sections that can each attack separately when cut off. To defeat it, every section must be brought down to less than two body parts to be killed (the smallest possible section is a head and a tail with no body pieces). It's main source of damage is through direct contact, with it's head doing a bulk of the damage. However, it is also able to shoot a dark-green projectile at {{user}} from it's eyes, called Vile Spit.

7. #7The Corruption

   Keys: the corruption, Slimeling, Corruptor, Slimer, Corruption, Corrupt Slime, World Feeder

   Enabled · After character · Order 10 · 100%

   Entry settings

   The Corruption is an evil biome with a dark purple wasteland, death, and decay theme, with an evil forest design to it, in contrast to the red gore theme of its counterpart, The Crimson. Every world will contain one of the two, with certain special worlds containing both The Corruption, and The Crimson. The Corruption surface contains purple Corrupt grass, Corrupt Trees, and Vile Mushrooms. Purple thorny bushes grow on the grass and deal damage when they are touched. Water in the Corruption is also purple. The Corruption also contains multiple chasms, underground extensions of the biome. Chasms lead downwards in a straight line, some crossing a horizontal connector, ending with a Shadow Orb. Demon Altars generally line the chasm's passages, appearing inside and around it. Chasms consist of Ebonstone. The Corruption spreads, meaning it slowly converts adjacent tiles to their Corruption variants. Chasms, Demon Altars, and Shadow Orbs will only appear upon world generation, and will not spawn in a Corruption area that has formed through spreading. Enemies that spawn in The Corruption include: Eater of Souls, Corrupt Goldfish, and Devourer. Enemies that spawn in The Corruption in hardmode include: Corruptor, Corrupt Slime, Slimeling (From Corrupt Slime), Slimer, and World Feeder. The boss that is fought in The Corruption is the Eater of Worlds.

8. #8Brain of Cthulhu

   Keys: Brain of Cthulhu, Crimson Heart, Bloody Spine

   Enabled · After character · Order 10 · 100%

   Entry settings

   The Brain of Cthulhu is a large, flying brain. It has the least health among all the bosses. It spawns once for every third Crimson Heart in The Crimson that is broken, or immediately after a Bloody Spine (crafted with 30 Vicious Powder and 15 Vertebrae at a Demon or Crimson Alter.) is used. It can only be summoned and fought in the Crimson, but at any time of day. The Brain of Cthulhu has two forms. In the first form, the brain cannot be harmed, and 20 Creepers (floating eyeballs) will float around it. After all of these are killed, the Brain of Cthulhu will go into its second form, where the middle of brain will open up to reveal a heart with an eye, where it will teleport more frantically and move much faster. The Brain of Cthulhu's second form attacks by ramming into {{user}}, like the second form of the Eye of Cthulhu. The Brain of Cthulhu will attempt to confuse {{user}} by surrounding them with fake copies of itself. It can be easy to distinguish which one is real and which are fake due to opaqueness, which increases the lower the Brain of Cthulhu gets. However, you can only hit the real one, and the fakes cannot take damage, nor can they deal any. All attacks just phase right through them.

9. #9The Crimson

   Keys: Blood Jelly, Viscous Goldfish, Herpling, Face Monster, The Crimson, Crimslime, Blood Crawler, Blood Feeder, Crimera, Crimson

   Enabled · After character · Order 10 · 100%

   Entry settings

   The Crimson is an evil biome with a fleshy infection, red gore theme, in contrast to the dark purple wasteland theme of its counterpart, the Corruption. Every world will contain one of the two, with certain special worlds containing both The Crimson, and The Corruption. The Crimson surface contains red Crimson grass, Crimson Trees, and Vicious Mushrooms. Red thorny bushes grow on the grass and will deal damage when touched. Water in the Crimson is also red. The Crimson also contains multiple chasms, extensions of the biome into the underground. Every chasm has an entrance on the surface and leads to a large, circular cavity, then branches off into small "fingers" which end with a Crimson Heart. Crimson Altars generally line the chasm's passages, appearing inside and around it. Chasms consist of Crimstone. he Crimson spreads, meaning it slowly converts adjacent tiles to their Crimson variants. Chasms, Crimson Altars, and Crimson Hearts will only appear upon world generation, and will not spawn in a Crimson area that has formed through spreading. Whenever three Crimson Hearts are destroyed, no matter how much time has passed in between each one, the Brain of Cthulhu will spawn. Enemies that spawn in The Crimson include: Blood Crawler, Viscous Goldfish, Face Monster, and Crimera. Enemies that spawn in The Crimson in hardmode include: Herpling, Crimslime, Blood Jelly, and Blood Feeder. The Boss that is fought in The Crimson is the Brain of Cthulhu.

10. #10Queen Bee

    Keys: Queen Bee, Abeemination

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Queen Bee is an enormous bee. She is summoned by destroying a Larva, encased within the walls of Bee Hives located in the Underground Jungle, or by the use of an Abeemination (Crafted with 5 honey blocks, a stinger, 5 hives, and bottled honey.) anywhere in the Jungle. She is the only source of Bee Wax in the game. The Queen Bee alternates between charging at {{user}}, hovering above them while spawning Bees, and moving left and right while shooting stingers. The lower she gets, quicker her charges are.

11. #11Skeletron

    Keys: Old Man's Curse, Skeletron

    Enabled · After character · Order 10 · 100%

    Entry settings

    Skeletron is a large floating skeletal head with two hands. It is initially summoned by speaking to the Old Man at the entrance of the Dungeon and activating his curse at night, but can be summoned again by killing the Clothier while equipped with the Clothier Voodoo Doll at night. Skeletron will alternate between attacking {{user}} with its hands and performing a spinning attack. Skeletron's head is the source of it's life, but it has very high damage reduction. However, this can be removed by destroying it's hands. However, once one of it's hands have been destroyed, it will periodically shoot homing skulls at {{user}} from it's head. If it becomes daytime while you are fighting Skeletron, and if it has not been defeated before the night is over, Skeletron will gain a massive amount of defense and spin at people at a high speed, and gaining the ability to one shot anything until everyone is dead or it is defeated.

12. #12The Dungeon

    Keys: Hell Armored Bones, Rusty Armored Bones, Skeleton Commando, Ragged Caster Diabolist, Skeleton Sniper, Blue Cultist Archers, Lunatic Devotees, Blue Armored Bones, dungeon, Bone Lee, Giant Cursed Skull, Paladin, Necromancer, Tactical Skeleton, The Dungeon, Dungeon Spirit

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Dungeon is a vast underground labyrinth made up of Bricks that is generated on world creation, and contains unique, mostly skeletal enemies whose spawn rates increase the deeper you travel. It begins at an above-ground entrance structure resembling a castle, and extends down to near-Underworld depths. One Dungeon is generated in each world. Accessing the Dungeon requires first defeating Skeletron. Some passages are blocked off by Cracked Dungeon Bricks. These blocks look almost identical to regular Dungeon Brick, but appear slightly crumbled, and are destroyed upon contact. Breaking one block may break adjacent false blocks in a chain. There are several Locked Gold Chests containing both loot unique to the Dungeon and standard Underground loot. A Golden Key is required to open each of these, and will be consumed upon unlocking a chest, which is always dropped by a Dungeon Slime upon death. Locked Biome Chests are also present, but they can only be opened after Plantera is defeated and the player has obtained a respective Biome Key. After Plantera is defeated, the Dungeon spawns new, more powerful enemies, which offer access to new items. After a player defeats Golem and Skeletron in a world, a group of 4 Cultists will spawn at the entrance of the Dungeon. Killing them will summon the Lunatic Cultist. To gain unrestricted access to the Dungeon, Skeletron must first be defeated. Skeletron is summoned by speaking to the Old Man, who guards the Dungeon entrance. At night, he will ask you to free him from his curse, agreeing to do so will turn the Old Man into Skeletron. Speaking to the Old Man during day will not allow the player to fight Skeletron. The Dungeon can be entered but not fully explored before Skeletron is defeated. Traveling to -3 depth in the Dungeon before it has been defeated will summon Dungeon Guardians which will track the intruders down no matter where they go, kill anyone with a single hit. The Dungeon Guardians are have infinite defense, each attack only dealing 1 damage, 2 damage if you land a critical hit, and killing them will not grant access to the Dungeon. Enemies that spawn in The Dungeon include: Angry Bones, Dark Caster, Cursed Skull, Dungeon Slime, and Dungeon Guardian (Only before Skeletron is killed.) Enemies that spawn in The Dungeon post-Plantera include: Blue Armored Bones, Rusty Armored Bones, Hell Armored Bones, Paladin, Necromancer, Ragged Caster Diabolist, Skeleton Commando, Skeleton Sniper, Tactical Skeleton, Giant Cursed Skull, Bone Lee, and Dungeon Spirit. After Golem has been defeated, Lunatic Devotees and Blue Cultist Archers (2 of each) will spawn at the entrance to the Dungeon. The Lunatic Devotees and Blue Cultist Archers are extremely weak, and will likely die in one or two attacks. Bosses that are fought at The Dungeon: Skeletron and Lunatic Cultist.

13. #13The Underworld

    Keys: Tortured Soul, Lava Bat, Lava Slime, Fire Imp, Hell, Voodoo Demon, Underworld, the underworld, Mimic, Demon, Hell Bat, Red Devil

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Underworld (also known as Hell) is the deepest layer of the world. It is a large, open cavern that stretches across the bottom of the world, with a ceiling of Ash Blocks and a lower terrain of large lava pools, Ash Blocks, and Hellstone. It also contains numerous Ruined Houses, which are natural structures containing unique furniture and loot. The Wall of Flesh boss can be summoned in the Underworld; defeating it will cause the world to convert to Hardmode. The Underworld contains many hazards, such as large pools of lava and various difficult enemies. Further, because the Wall of Flesh is summoned by dropping a Guide Voodoo Doll into lava, killing a Voodoo Demon positioned over lava can inadvertently summon it. The middle two-quarters of the Underworld contains several Ruined Houses, which are towers made from Obsidian Bricks and, less commonly, Hellstone Bricks that contain Shadow Chests, Hellforges, Pots, Obsidian furniture, and other lootable items. Shadow Chests require the Shadow Key to open (acquired in the Dungeon's Locked Gold Chests), and contain unique Underworld-only loot. The outer sixths of the underworld are occupied by ash forests, which are barren, fiery-looking forests that feature Ash trees growing on Ash grass. Enemies that spawn in The Underworld include: Hell Bat, Lava Slime, Fire Imp, Demon, and Voodoo Demon. Enemies that spawn in The Underworld after entering hardmode include: Mimic, Tortured Soul, Lava Bat, and Red Devil. The boss that is fought in The Underworld is the Wall of Flesh.

14. #14Wall of Flesh

    Keys: Wall of Flesh, Guide Voodoo Doll

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Wall of Flesh is a towering wall that spans the entire screen height. It is summoned by throwing a Guide Voodoo Doll into a pool of lava in the Underworld while the Guide is alive (or by directly killing the Guide in lava in the Underworld). It is the final boss of pre-Hardmode, and defeating it will irreversibly enable Hardmode in the world. The Wall of Flesh will sweep across the map, moving faster as its HP gets lower. It must be killed before it reaches the end of the map, otherwise it will despawn and any living players in the Underworld will die. Additionally, the Wall of Flesh's eyes fire lasers, with the rate of fire increasing as it takes damage. Its mouth burps Leeches that will chase the player, and it has small mouths attached to it called The Hungry, which will also move toward and damage the player, and can also shield the Wall of Flesh from any damage if they are in the way. If {{user}} does not defeat the Wall in time, The Hungry will rapidly respawn, thus often blocking the wall from attacks, and can deal significant damage themselves.

15. #15The Hallow

    Keys: Pixies, hallow, Gastropods, Unicorns, Rainbow Slime, The Hallow

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Hallow is a Hardmode surface biome characterized by pastel-colored fairytale graphics, with cyan-colored grass, multicolored trees, and a large rainbow in the background, as well as similarly whimsical-looking (though quite dangerous) enemies. The Underground Hallow biome can be found directly beneath a naturally-generated Hallow biome. The Hallow does not exist in newly-generated worlds. When the Wall of Flesh is defeated for the first time and the world converts to Hardmode, a diagonal stripe of the Hallow biome extending from the surface to the bottom of the world will be generated, converting all applicable tiles to their Hallowed variant. This initial conversion can replace preexisting sections of the world's "evil biome" (Corruption or Crimson). If areas of the Jungle or Glowing Mushroom biome are included in the conversion area, Stone will be converted, but grass on Mud Blocks will be unaffected. Once generated, the Hallow spreads in a manner similar to the evil biomes; Pearlstone, Pearlsand, and dirt blocks growing Hallowed grass will spread Hallow to neighboring blocks, causing Hallow enemies to spawn over ever-larger areas. Hallow can also be seeded in new areas via Hallowed Seeds, Holy Water, or Blue Solution. However, The Hallow, unlike Crimson and Corruption, cannot spread through mud areas such as those found in Jungles or Glowing Mushroom biomes, and Sunflowers can stop its surface spreading like they would stop the spread of evil biomes in pre-hardmode. Enemies that can spawn in The Hallow include: Pixies, Unicorns, Rainbow Slime (During rain), and Gastropods (Only at night). The Hallow is also where the Queen Slime and Empress of Light are fought.

16. #16Queen Slime

    Keys: Gelatin Crystal, Queen Slime

    Enabled · After character · Order 10 · 100%

    Entry settings

    Queen Slime is a giant pearlescent slime. She is available to battle at the start of Hardmode, and is summoned from Gelatin Crystals which can be found in the Underground Hallow. There is a very strong resemblance to the pre-Hardmode King Slime. As she takes damage she spawns Crystal Slimes, Bouncy Slimes, and Heavenly Slimes to aid her. While her first form is straightforward with attack patterns similar to those of King Slime, the second phase poses much more of a threat as the boss grows white wings and begins to fly in the air, shooting projectiles from above.

17. #17The Twins

    Keys: Mechanical Eye, The Twins

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Twins are a pair of cybernetic Eyes of Cthulhu. They exist as two individual entities, known as Retinazer and Spazmatism. The Twins are summoned using a Mechanical Eye (Crafted using 3 lenses, 5 of any iron bar, and 6 Souls of light at a Mythril or Orichalcum anvil. at night.) They also have a (10%) chance to spawn naturally at dusk (7:30 PM) during Hardmode once a Demon or Crimson Altar has been destroyed, as long as they have not yet been defeated at least once in the current world. When this occurs, {{user}} will have a sense of foreboding, sensing that that night will be a terrible night... First Phase: The eyeball with the red iris, Retinazer, fires purple, high-velocity Eye Lasers at low accuracy when close enough to the player. It will usually attempt to remain diagonally above {{user}}, but moves slower compared to Spazmatism. The eyeball with the green iris, Spazmatism, fires green balls of Cursed Flames, which have a (68.75%) chance of inflicting the Cursed Inferno debuff for 5–7.5 seconds. It will usually attempt to remain horizontally in line with {{user}}. Second Phase: When one of the eyes' health dips below 40%, it spins before transitioning into its second form, casting off its retina to reveal its true mechanical appearance before beginning to attack the player after a few seconds. During their second phase, the defense of each eye is also increased. Retinazer becomes a mechanical eye with a laser cannon in its pupil and now only fires red Death Lasers, ceasing its attempts to ram the player (or align with the player diagonally). It fires at a higher rate, with more damage, and at pinpoint accuracy, periodically switching to a quick barrage with considerably less damage. Both normal and burst lasers are fired more quickly as its health is depleted, leading to a near-constant stream of them near the end. Retinazer will, however, align horizontally with {{user}} when firing barrages, though not as tightly as first-phase Spazmatism does. When not barraging, Retinazer will usually align itself vertically with {{user}} from above. Spazmatism becomes a mechanical mouth (similar to the Eye of Cthulhu's second phase) that continuously pursues the player. It alternates between charging at the player six times with increased speed and range, and spewing Eye Fire from its mouth in the form of a continuous stream of Cursed Flames while slowly approaching the player for approximately seven seconds, in a manner similar to a Flamethrower. The stream of Cursed Flames also has a 68.75% chance of inflicting the Cursed Inferno debuff for 5–7.5 seconds. Spazmatism no longer attempts to align itself horizontally with the player.

    If not beaten before daytime, The Twins will flee from the battle and despawn. Both Spazmatism and Retinazer must be defeated for The Twins to be considered defeated. However, it is not necessary to defeat them both at the same time.

18. #18The Destroyer

    Keys: The Destroyer, Mechanical Worm

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Destroyer is a colossal mechanized worm. The Destroyer is summoned by using a Mechanical Worm (Crafted by using 6 Rotten chunks or Vertebrae, 5 of any iron bars, and 6 souls of night at a Mythril or Orichalcum Anvil.) anywhere, but can only be spawned at night. It also has (10%) chance to spawn naturally at dusk (7:30 PM) during Hardmode once a Demon or Crimson Altar has been destroyed, as long as it has not yet been defeated at least once in the current world. When this occurs, {{user}} will feel vibrations from deep below.

    The Destroyer is a Hardmode mechanical boss which is essentially a more difficult version of the Eater of Worlds. Like the Eater of Worlds, it is a very large worm. Although it appears to be similarly made up of many segments, individual segments cannot die, and The Destroyer will not split apart into multiple entities; its segments share a singular health pool. Like other worms, The Destroyer takes increased damage from attacks that damage multiple segments at once. Each of The Destroyer's segments fires lasers at {{user}}. The red-lit segments contain a Probe, which is an independent flying enemy that is launched periodically as the boss takes damage and also fires lasers. Probes can be killed individually once detached, and never return to The Destroyer.

    The Destroyer spawns coiled up, like most worm enemies, and immediately uncoils and moves toward the player. It follows the player from any distance. The Destroyer leaps from the ground and attempts to ram the player. It has limited mobility when fully in the air, requiring blocks or platforms to "burrow" through. It also attempts to surround the player, and if the player is too close to the ground it can succeed. In addition, The Destroyer performs the following attacks: It fires red Death Lasers from its segments. It releases flying Probes from its body that fire Pink Lasers. A body segment has a (4%) chance to release a Probe whenever it is damaged. The red light on the segment goes out when it releases the Probe, and it will not release another Probe afterward. Probes will fly toward {{user}}, attempting to maintain a distance while occasionally moving into melee range. They fire lasers with moderate accuracy and are able to reliably hit a stationary person. Probes never return to the main body, and despawn if the player gets too far away or dies, unlike The Destroyer, which follows the player until either one dies. Probes do not die when the boss dies, so they may have to be killed even after The Destroyer has been defeated.

    The Destroyer must be killed before dawn (4:30 AM), otherwise it flees and despawns.

19. #19Skeletron Prime

    Keys: Mechanical Skull, Skeletron Prime

    Enabled · After character · Order 10 · 100%

    Entry settings

    Skeletron Prime is a weaponized mechanical variation of Skeletron. Instead of two hands, it has four limbs – a vice, laser gun, saw, and cannon. However, like Skeletron, only the head has to be defeated. Skeletron Prime can be summoned by using a Mechanical Skull (Crafted by combining 30 Bones, 5 of Any Iron Bar, 3 Souls of Light, Souls of Night) anywhere at night. It also has a (10%) chance to spawn naturally at dusk (7:30 PM) during Hardmode once a Demon or Crimson Altar has been destroyed, as long as it has not yet been defeated at least once in the current world. When this occurs, {{user}} will feel the air around them begin to grow chilly, no matter what season it is. Skeletron Prime's four limbs all have unique attacks: Prime Cannon fires bombs every 2.33 seconds that do not destroy tiles, usually up into the air rather than directly at the player. It usually stays above the player. Prime Saw usually remains under the player, moving up and down. Prime Vice will swipe around wildly, making occasional lunges at the player. It usually remains diagonal to the player. Prime Laser shoots red Death Lasers every 3.33 seconds, similar to those of Retinazer and The Destroyer, and is always pointed at a player. It usually stays horizontal to the player. Every 10 seconds, Skeletron Prime will enter a spinning phase for 6.67 seconds, in which its attacks become more aggressive: Skeletron Prime's head will grow spikes and start spinning towards the player at 10 mph, exactly like how its pre-Hardmode counterpart Skeletron does. Damage and defense are doubled. In Expert Mode, the base spinning speed is 31 mph and is increased the further the player is away, up to a maximum of 76 mph at a distance of 37.5 tiles. Prime Cannon will aim at the player directly and decrease its cooldown between firing to 0.67 seconds. Prime Saw will begin homing directly towards the player's location. Prime Vice becomes more aggressive and frequently lunges towards the player. Prime Laser will fire lasers every 1.33 seconds. If Skeletron Prime is not killed before dawn (4:30 AM), it will enrage and permanently behave like a faster Dungeon Guardian, increasing its velocity and usually killing {{user}} instantly upon contact.

20. #20Plantera

    Keys: Plantera

    Enabled · After character · Order 10 · 100%

    Entry settings

    Plantera is an enormous flower. She is awoken by destroying a Plantera's Bulb, which is found in the Underground Jungle after defeating all three mechanical bosses (The Twins, The Destroyer, and Skeletron Prime). If {{user}} exits the Underground Jungle during the fight, Plantera becomes "enraged", gaining a significant boost to her stats. Plantera has two phases. In her first phase, she clings to solid blocks using vine-like hooks and fires pink Seeds at {{user}}, and eventually fires green Poison Seeds and bouncing Thorn Balls the closer she gets to her second phase. In her second phase, Plantera's petals fall away to reveal a thorny, gaping mouth, and becomes much faster and more aggressive towards {{user}}. She will also release numerous "Plantera's Tentacle" minions that are attached to her main body. Upon defeat, Plantera will drop a Temple Key that can be used to access the Jungle Temple.

21. #21Golem

    Keys: Golem, Jungle Temple

    Enabled · After character · Order 10 · 100%

    Entry settings

    Golem is a hulking, stone automaton. It is summoned by using a Lihzahrd Power Cell (Found in chests inside the Jungle Temple.) at the Lihzahrd Altar in the Jungle Temple. In order to access the Jungle Temple, Plantera must be defeated to obtain the Temple Key. Golem has two phases. During the first phase, its two fists and its head can be attacked. Like Skeletron, destroying the fists is not needed, but can be helpful. Once the head's health is depleted, it begins flying above the body while shooting fireballs and eye beams, leaving the body open to attack. The body will jump around and punch madly in this phase. Defeating the body will defeat Golem.

22. #22Duke Fishron

    Keys: Duke Fishron, Truffle Worm

    Enabled · After character · Order 10 · 100%

    Entry settings

    Duke Fishron is a mutant shark-pig-dragon hybrid. He is summoned when a Truffle Worm (Found in the underground Mushroom Biome.) is used as bait for fishing in the Ocean. In his first stage, Duke Fishron will attempt to ram into {{user}} five times before either firing explosive bubbles or summoning Sharknados. In his second stage, Duke Fishron gains glowing eyes and a boost to attack and defense. Although his ramming attacks remain the same, instead of shooting bubbles directly at {{user}}, he flies quickly around in circles, sending bubbles everywhere. Instead of summoning Sharknados in this stage, Duke Fishron summons larger Cthulhunados. These remain in place for a longer time than Sharknados. In his third stage, the surrounding area turns dark blue, Duke Fishron becomes invisible, and only his glowing eyes are visible. He teleports and tries to ram into {{user}} with high speed a few times before he teleports again.

23. #23Empress of Light

    Keys: Prismatic Lacewing, Empress of Light

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Empress of Light is a powerful Hallow-themed fairy boss. She can be summoned from killing a Prismatic Lacewing which spawns in the Hallow once Plantera is defeated. She is generally fought at night, and becomes "enraged" during the day, killing {{user}} in one hit, whether it be through contact damage, or her attacks. Prismatic Lacewings spawn in The Hallow on the Surface between dusk (7:30 PM) and midnight (12:00 AM) once Plantera has been defeated. They can be caught with a Bug Net (or its upgrades), then released elsewhere and killed by {{user}}. If released outside of the Hallow, a Prismatic Lacewing will disappear almost immediately. She is incredibly mobile and performs a variety of complex, projectile-focused attacks in specific patterns, which change considerably between her first and second phases. The Empress of Light can be fought at any time, but she becomes "enraged" during daytime, indicated by the color of attacks turning from rainbow-colored to bright yellow. Prismatic Bolts 1: The Empress of Light summons 30 Prismatic Bolts over the course of 1 second at her current position in random directions. The Prismatic Bolts will keep their momentum when first summoned, and home in on {{user}} after a short delay. These bolts do not have perfect tracking, and will miss if {{user}} makes a sharp turn as they approach. Prismatic Bolts 2: The Empress of Light summons 12 Prismatic Bolts over the course of 0.83 seconds in a clockwise spiral. These Prismatic Bolts behave identically to those used in the first variant of the attack. Dash: The Empress of Light positions herself to the left or right of {{user}} before charging horizontally in their direction over the course of 1.5 seconds. Sun Dance: The Empress of Light hovers above and slightly to the left of {{user}} before emitting 8 large, persistent Sun Dance projectiles that slowly rotate clockwise around her. Three sets of projectiles are created per attack, with each lasting 3 seconds and positioned slightly further clockwise than the last. Everlasting Rainbow: The Empress of Light releases a ring of 13 Everlasting Rainbows over the course of 0.7 seconds that slowly spiral out clockwise from her original position, then spiral back inward in the same direction. The Everlasting Rainbow lingers for a total of 11 seconds, and also leave behind a trail of light that deals the same amount of damage to {{user}}. Ethereal Lance 1: The Empress of Light summons 25 Ethereal Lances over the course of 1.67 seconds that launch in the direction {{user}} was headed when they were summoned, telegraphed by colored beams. Ethereal Lances are summoned from four predetermined points behind {{user}}'s current movement direction, each point is offset to form an arc surrounding {{user}} from that direction. If {{user}} is not moving, then the Lances will default to appearing from above {{user}}. Ethereal Lances do no damage until launched. Ethereal Lance 2: The Empress of Light summons 4 waves of evenly spaced Ethereal Lances over the course of 4 seconds. These Ethereal Lances will travel across the field, telegraphed by colored beams. The first wave travels from the left side of the field to the right, the second from right to left, the third wave from top-left to bottom-right, and the fourth wave from top-right to bottom-left. Ethereal Lances do no damage until launched. Ethereal Lance 3: The Empress of Light summons 16 Ethereal Lances over the course of 1.67 seconds. These Ethereal Lances precisely target {{user}}'s location, telegraphed by colored beams. They are always summoned behind {{user}}. Ethereal Lances do no damage until launched. The Empress of Light uses her attacks in a set pattern. There will be a fixed interval between each attack, which is shorter in her second phase. When spawned, the Empress of Light will hover in place for 3 seconds[10] before executing the following attacks in order: Prismatic Bolts 1, Dash, Sun Dance, Dash, Everlasting Rainbow, Prismatic Bolts 1, Dash, Ethereal Lance 1, Dash, Everlasting Rainbow. This sequence of attacks repeats indefinitely until the second phase starts. When the Empress of Light is below half of her max health, she will disappear and reappear above the next estimated location of {{user}} and enters her second phase, gaining four tendrils on her back and a brighter purple coloration (or bright pink when enraged). This transition takes a total of 3 seconds. During the second phase, the Empress of Light's defense is increased to 60, and she will perform a new pattern of attacks, with slightly shorter attack intervals and higher damage: Ethereal Lance 2, Prismatic Bolts 1, Dash, Ethereal Lance 3, Everlasting Rainbow, Prismatic Bolts 1, Sun Dance, Ethereal Lance 1, Dash, Prismatic Bolts 2. This sequence of attacks repeats indefinitely until the Empress of Light is defeated.

24. #24Lunatic Cultist

    Keys: Lunatic Cultist

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Lunatic Cultist is a comparably small boss, being the same size as an ordinary human. It is summoned by killing the four cultists, which reside at the entrance of the Dungeon after Golem and Skeletron are defeated. The Lunatic Cultist's attacks become more powerful as it loses health. The Lunatic Cultist flies around randomly, cycling between shooting fireballs, creating a ball which shoots lightning at {{user}}, shooting a giant snowflake which shoots ice shards around it, shooting shadowflames, and shooting five destructible projectiles twice in a row. The Lunatic Cultist will also create fake copies of itself, which will summon a Phantasm Dragon when damaged. If a Phantasm Dragon is still alive and {{user}} damages these copies, it will summon an Ancient Vision instead. Waiting too long to attack the real Lunatic Cultist will also cause the Phantasm Dragon or Ancient Vision to be summoned.

25. #25Moon Lord

    Keys: Moon Lord, Celestial Sigil

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Moon Lord is the final boss of Terraria. He is summoned one minute after defeating the Lunatic Cultist, which is signified by the shaking felt around the world, the shaking intensifying the closer it gets, or by using a Celestial Sigil (Crafted by combining 12 Solar Fragments, 12 Vortex Fragments, 12 Nebula Fragments, and 12 Stardust Fragments at an Ancient Manipulator, dropped by the Lunatic Cultist upon it's defeat.) The Moon Lord has two hands and a head which must be killed by attacking the eyes on them, and when killed will release invincible True Eyes of Cthulhu. When the three eyes are destroyed, the Moon Lord's core opens up on his chest, which must then be destroyed to defeat the boss. The Moon Lord's hands shoot two projectiles at once which home onto {{user}}, and summon phantom versions of the True Eye of Cthulhu before throwing them at {{user}}. The Moon Lord's top eye will occasionally fire a Phantasmal Deathray that will sweep across the entire screen. Being very deadly to everyone, it can be avoided by fast movement. When the True Eyes of Cthulhu are released, the places where they used to be will inflict minor contact damage. The True Eyes of Cthulhu will fire less damaging versions of many of the same attacks as they did when they were still enclosed within the Moon Lord.

26. #26Blood Moon

    Keys: blood zombie, corrupt penguin, chattering teeth bomb, Blood moon, bloody tear, corrupt bunny, the bride, vicious penguin, driipler, vicious goldfish, corrupt goldfish, clown, vicious bunny, The Groom

    Enabled · After character · Order 10 · 100%

    Entry settings

    A Blood Moon is an event that takes place over the course of an entire night, from 7:30 PM to 4:30 AM, affecting only the surface layer. Blood Moons are signaled by the status message "The Blood Moon is rising...". All of the water in the world, even in the Underground and Cavern layers, will turn blood-red for the duration of the event, including rain and the moon itself. The event will spawn regular nighttime enemies as well as new, more dangerous enemies in large numbers, while also changing their behavior and spawning conditions. In order for a Blood Moon to naturally occur, the following criteria must be met: It will only occur if at least one player in the world has more than 120 health. It can only occur on nights when the moon phase is not new moon. It will not occur if the Eye of Cthulhu will spawn on that night. Given those criteria, the occurring chance of a Blood Moon is 1/9 (11.11%) chance in regular worlds. The spawn rate of enemies on the surface increases. Not only do they spawn faster, but more are spawned than can normally exist on-screen at once. This works no matter the environment, so for example Corruption and Crimson enemies can swarm more than they normally would. It only affects spawn rates above the surface. Spawn rates below the surface remain the same. Enemies can spawn near towns, even though those normally suppress enemy spawns. Zombies and their counterparts become able to open Doors. Goldfish, Bunnies, and Penguins turn into Corrupt Goldfish, Corrupt Bunnies and Corrupt Penguins in Corruption worlds, or Vicious Goldfish, Vicious Bunnies and Vicious Penguins in Crimson worlds. Enemies that can spawn during a Blood Moon include: The Groom, The Bride, Blood Zombie, Drippler. In a Corruption world: Corrupt Bunny, Corrupt Goldfish, and Corrupt Penguin. In a Crimson world: Vicious Bunny, Vicious Goldfish, and Vicious Penguin in a Crimson world. Enemies that can spawn during a Blood Moon in hardmode include: Clown, and Chattering Teeth Bomb. Enemies that can be fished during a Blood Moon include: Wandering Eye Fish and Zombie Merman. In hardmode: Dreadnautilus, Blood Squid (from Dreadnautilus), Blood Eel, and Hemogoblin Shark.

27. #27Goblin Army

    Keys: Goblin Army, Goblin Battle Standard, Goblin Invasion

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Goblin Army (also known as the Goblin Invasion) is an invasion event that causes unique goblin enemies to spawn in place of regular enemies. A Goblin Army can occur randomly at any dawn after certain conditions are met. It can also be summoned manually by the Goblin Battle Standard. After the event is initiated, the Goblin Army starts from a random side of the world (informed by one of these two status messages: "A goblin army is approaching from the west!" / "A goblin army is approaching from the east!") When the Goblin Army reaches the target point, the status message "A goblin army has arrived!" will be displayed. Event enemies can only be spawned near the location of the Goblin Army, or near town NPCs. The Goblin Army is completed after killing enough enemies from it. A Goblin Battle Standard can be used to manually summon the Goblin Army if at least one player in the world has at least 200 maximum health. If no player fulfills this condition or an invasion event is already active, the Goblin Battle Standard will have no effect and will not be consumed. If the following conditions are fulfilled, a Goblin Army can also occur randomly (with certain chances) at dawn (4:30 AM): No other invasion events or the Old One's Army is active. At least one Shadow Orb or Crimson Heart has been destroyed. At least one player in the world has at least 200 maximum health. The Goblin Army event is completed after killing enough enemies from the event. The status message "A goblin army has been defeated!" is displayed when completing the event. After killing 120 goblins, the event will end. Enemies that spawn during a Goblin Invasion include: Goblin Peon, Goblin Thief, Goblin Warrior, Goblin Sorcerer, Goblin Archer, and Goblin Warlock (During Hardmode).

28. #28The Desert

    Keys: Light Mummy, The desert, Mummy, Blood Mummy, Vulture, Antlion, Dark Mummy

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Desert is a biome which consists predominantly of Sand Blocks and cacti. Every world contains a main Desert area (which houses the Underground Desert biome beneath it) and, possibly, additional small Desert patches called Dunes (which only contain layers of Sand Blocks on the surface and do not have underground parts). Pyramids and small pools of water can rarely appear in Dunes. Objects in the Desert appear slightly hazy due to heat distortion, and water has a unique turquoise color. A Desert can also be generated with an Oasis mini-biome, featuring Palm trees and a large pool of water in the center. Deserts are overridden by most other biomes, including the Ocean. Rain will occur in Deserts just as in any other surface biome. A Sandstorm may occur when wind speed is over 30 mph, which causes special enemies to spawn and pushes the player in the direction of the wind. The Desert can be infected by the Corruption, the Crimson, or the Hallow. Corruption/Crimson Deserts may already spawn upon world creation. The enemies from the main biome (the evil biome or the Hallow) can spawn in an infected Desert alongside the normal Desert enemies (except for Mummies and Sand Sharks, which have special biome-specific variants), and the music from the main biome is played. The sand in an infected Desert is replaced by Ebonsand, Crimsand, or Pearlsand Blocks, respectively. Although their color will change, cacti still drop Cactus when cut, and Waterleaf are also able to grow in a Hallowed Desert. Enemies that can spawn in The Desert include: Vulture and Antlion. Enemies that can spawn in The Desert during hardmode include: Mummy, Light Mummy (Hallowed Desert), Dark Mummy (Corrupted Desert), and Blood Mummy (Crimson Desert).

29. #29The Jungle

    Keys: Angler Fish, Arapaima, Zombie, Jungle Slime, Snatcher, Jungle Bat, Demon Eye, Giant Tortoise, Derpling, The Jungle, Piranha, Angry Trapper, Giant Flying Fox

    Enabled · After character · Order 10 · 100%

    Entry settings

    The Jungle is a surface biome composed primarily of grass, vines, Mud, Jungle Trees, Bamboo and pools of water, with a dark green background. Jungle trees grow automatically on Jungle grass found there, though traditional Acorns can also be planted. The Underground Jungle is found just below the Jungle, beginning at cavern depths. The Jungle is one of the more challenging surface biomes, especially for those just entering Hardmode. Jungle enemies have much more health and deal more damage than those typically found in other surface areas. The Jungle becomes substantially harder during Hardmode. Additionally, there is a danger that the Jungle can be completely overtaken by the spread of Corruption/Crimson once Hardmode has been in effect for some time, making essential Jungle items more difficult to acquire, due to evil biomes suppressing the Jungle's mob spawns and not allowing things like Life Fruits to grow. Defeating Plantera will slow down the spread of Corruption/Crimson and Hallow to 50% of their original speed. Enemies that can spawn in The Jungle include: Jungle Slime (Day), Jungle Bat, Piranha, Snatcher, and Night Enemies: (Zombie, Demon Eye). Enemies that can spawn in The Jungle during hardmode include: Derpling (Day), Giant Tortoise, Giant Flying Fox, Angler Fish, Arapaima, and Angry Trapper.

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