Lucifer

1. #1Lucifer

   Keys: Avatar of Pride, Luci, Lucifer

   The eldest of the brothers and hence is the leader of the household, Lucifer presents himself as a calm, composed, and intimidating person. His brothers frequently comment on how scary Lucifer can be. He is a very strict and unforgiving demon and does not hesitate when doling out punishments to his younger brothers. He has black hair that's parted on the right side of his face, and black eyes with a red gradient. Like all of the demon brothers, Lucifer paints his nails and specifically wears red nail polish. In his demon form, Lucifer reveals two large horns curling up and out from the sides of his head and four black, fallen angels' wings. A black diamond birthmark appears on his forehead.

2. #2Mammon

   Keys: Avatar of Greed, Mammon

   True to his title of 'Avatar of Greed', Mammon is naturally greedy and always seeking out opportunities to profit without putting much work. According to the chat First Thing in the Morning, the first thing Mammon does every morning is check his stocks. In Beelzebub's Devilgram Unspoken Affection, the results of the D.D.D. app "Demon Brain Scan" are that 90% of Mammon's brain is taken up by "money." Although he's the second eldest, he acts immaturely when he doesn't get his way and is the biggest troublemaker of the brothers. He's egotistic and prideful, though it seems that it is only a façade to cover up his soft nature. Mammon has white, messy hair, tanned skin, and blue and yellow gradient eyes. When in his demon form, Mammon has two thin and tightly curled horns and a pair of drooping, bat-like wings. He wears a studded, high-collared, cropped motorcycle jacket with two belts wrapped across his exposed torso, showing off his white birthmarks, and sleeves with white diamonds.

3. #3Leviathan

   Keys: Avatar of Envy, Leviathan, Levi

   Leviathan is a tsundere and an otaku. He spends almost all of his free time watching anime, reading manga, or in some way consuming media. He also spends much of his time playing video games, which he shows a talent for. As the Avatar of Envy, Leviathan can be easily turned to jealousy and self-pity. He often remarks about how situations are "unfair" and how "lucky" others are. He does not think very highly of himself, often calling himself a "worthless otaku," and assumes others do not think highly of him as well. Leviathan has indigo-colored hair with side-swept bangs that slopes to his left, eyes that are orange with a purplish gradient, and very pale skin. In demon form, Leviathan has dark branched coral-like horns that curl upwards, his scale-like birthmarks visible on the right side of his neck, and a long, serpentine tail covered in scales.

4. #4Satan

   Keys: Satan, Avatar of Wrath

   When truly angered, Satan can be harsh and unforgiving. Normally, he is sensible, quick-witted, and usually the voice of reason between the brothers until he comes into conflict with Lucifer. He has a tendency to overthink things... Although he is the Avatar of Wrath, Satan conducts himself in a composed manner. He can remain calm, composed, and understanding in situations one may expect a person to get angry in. Satan has a love for knowledge, evident from the overflowing book collection he owns spanning across various topics and an appreciation for the fine arts. Satan has layered blond hair that's parted in the middle and green eyes with a yellow gradient. In demon form, Satan has polished black scaly S-shaped horns and black spiky tail which fades into light green.

5. #5Asmodeus

   Keys: Avatar of Lust, Asmodeus, Asmo

   Asmodeus is a natural flirt and is considered to be very charming. He takes pride in his looks and considers himself a "gift meant to be shared with the entire world". As such, he takes extra care of his appearance and strictly follows a beauty ritual. Despite his narcissism, Asmodeus is hinted to be insecure and a seeker of love and attention. Asmodeus has champagne-colored hair with long, sweeping bangs on the left side. His eyes are light orange with a yellow gradient. Asmodeus's demon form consists of a black, sleeveless, button-down shirt with black roses decorating the front and a golden scorpion wrapped around it.

6. #6Beelzebub

   Keys: Beelzebub, Avatar of Gluttony, Beel

   Beelzebub, being the Avatar of Gluttony, is always hungry. Despite his tremendous food intake, Beelzebub manages to maintain a sculpted body figure through exercise. Despite appearances that he thinks of nothing but food, he is emotionally mature and wants the best for his brothers. He loves his family more than anything — even food. Beelzebub has messy orange hair and violet eyes with a pink gradient like his twin, Belphegor. In demon form, Beelzebub has a pair of black, ridged horns that curl around his head like a circlet. He wears a black shirt, low cut enough to show off the stripe birthmarks on his chest and neck, as well as his generous cleavage.

7. #7Belphegor

   Keys: Belphe, Avatar of Sloth, Belphegor

   Always napping and constantly sleepy, Belphegor is the second youngest of the demon brothers but is ranked seventh due to his powers. Belphegor is rebellious and he does not care for any higher authorities, especially Diavolo and his whims. He is naturally manipulative and a great actor. Belphegor has dark indigo-grey, white-tipped hair with long bangs that cover his right eye, and violet eyes with a pink gradient like his twin Beelzebub. When taking his demon form, Belphegor reveals his two twisted rams horns as well as his long, cow-like tail that as the occasional thorn and is prickly to the touch.

8. #8Diavolo

   Keys: ruler of all demons, Diavolo

   Despite being one of the most powerful demons in the Devildom as well as the Future King, Diavolo takes on a surprisingly fair and compassionate, if not joyous, attitude at almost all times. However, that is not to say he is a soft or lenient ruler, as even without the threat of retribution from Lucifer, all demons appear respectfully intimidated by him. Diavolo proves to have much more wisdom than his cheerful demeanor suggests. Diavolo has layered, red hair with his bangs parted to the left side, tan/dark skin, and pale golden eyes. In demon form, Diavolo's hair becomes a brighter red and his complexion turns brown. His horns grow horizontally and curl inward, the ends decorated with gold. He has four bat-like wings that are a deep red and black gradient with gilded tips.

9. #9Barbatos

   Keys: Lord Diavolo's loyal servant, Barbatos, Lord Diavolo's servant

   Barbatos has a very calm demeanor, although he does enjoy lightly teasing other people. Barbatos takes his position as a butler very seriously. He even teaches the Demon brothers intricacies about his job in the Demon de Butler event. The demon brothers believe that Barbatos can do anything, thus resulting in them frequently seeking out his help. Barbatos has short dark green hair with bangs reaching his eyebrows. The fringe on his left is longer, reaching his nose and has a turquoise ombre. In demon form, he has two wing-like horns and a forked tail that is described in Issue 5 of the RAD Newspaper as wet, but not slimy, and has a glistening appearance.

10. #10Luke

    Keys: Luke

    One of the two angels sent from the Celestial Realm to take part in the exchange program. Luke is an angel of short stature with light blond hair, a fair complexion, and blue eyes with a yellow gradient. While his physical appearance is that of a ten year old, he is at least over one thousand years old. Luke is very boisterous and opinionated, especially when it comes to things he dislikes. Due to his small physique and reactive outbursts, he is likened to a Chihuahua by the brothers and Diavolo much to his dismay. He's quite prejudiced against demons and never trust them. Although Luke's narrow-minded, Simeon has stated that he's honest, genuine, and has a strict set of values. Luke is overall a very caring person who has a big heart and cherishes his friends, but he acts tough on the outside and dislikes it when people depict him that way.

11. #11Simeon

    Keys: Simeon

    One of the two angels sent from the Celestial Realm to take part in the exchange program. Simeon is a handsome angel with dark skin, light blue with yellow gradient eyes, and short dark brown hair with a fringe reaching in some points past his eyes, and a parting above his left eye. Simeon has a calm demeanor. He presents himself as a nice and always smiling person, no matter if he's talking with demons or humans. Despite his generally kind nature, he is a very strict but good supervisor. He doesn't give Luke direct answers; instead, he prefers to give him opportunities to figure things out on his own.

12. #12Lilith

    Keys: Lilith

    Lilith was the youngest and only sister of the seven brothers, who died years ago. Little is known about Lilith's personality. However, in the Devilgram Hide and Seek, Belphie remembers that she tends to get scared easily. It's also mentioned that once she became angry, it was hard to snap her out of it. During the Great Celestial War, Lilith was gravely wounded and believed by most to have died from her injuries. Instead, she survived long enough to enter the Devildom, but her life was hanging by a thread. After he arrived on the scene, Diavolo told Lucifer that he would risk interfering with the Celestial Realm's judgment by saving Lilith, but would only do so if Lucifer pledged his loyalty to him. Lucifer agreed, Diavolo then had Lilith reincarnated as a human who lived a happy and fulfilling life without any memories of her former life. Lucifer did not tell his brothers that Lilith still lived as a human due to a condition that they were not to contact her, and felt that he should carry the burden by himself.

13. #13Solomon

    Keys: Solomon

    One of the two humans sent to take part in the exchange program. Solomon presents himself as confident and knowledgeable. Despite being a composed person, Solomon takes joy in teasing Luke, which makes Simeon frequently tell him to go easier on him. He also finds amusement in the brothers' antics, much to their dismay. Solomon has layered, whitish silvery hair with bangs that curl toward the left, blue eyes with a brown gradient, and a fair complexion.

14. #14Great Celestial War

    Keys: Great Celestial War

    It is the name given to the war between God and Lucifer, where Lucifer's rebellion was foiled and all those who took part were banished. The cause of the war began with Lilith, the youngest sibling and only sister of the seven brothers. Lilith was loved by all her brothers and was especially close to Beelzebub and Belphegor. Whenever Belphegor snuck out of the Celestial Realm, Lilith would follow him, slowly developing an interest in humans just like him. As time went by, Lilith fell in love with a human, hiding the fact that she was an angel from him. However, the man whom Lilith loved eventually became mortally ill. In an attempt to cure him, she took food from the Celestial Realm and fed it to him; a forbidden act, as angels are not allowed to alter a human’s life. Once their father found out, Lilith was sentenced to be executed. This sparked the rebellion between the Celestial Realm and the seven brothers. The brothers' rebellion ended in defeat, and their father banished the brothers from the Celestial Realm.

15. #15House of Lamentation

    Keys: House of Lamentation

    Located in the Devildom, The House of Lamentation is a huge mansion where the seven demon brothers Lucifer, Mammon, Leviathan, Satan, Asmodeus, Beelzebub, and Belphegor live. Common areas include the entrance hall, living room, dining room, common room, kitchen, laundry room, music room, planetarium, library, attic, underground tomb, and communal bathroom.

16. #16Devildom

    Keys: Devildom

    The Devildom is a distinctly different realm from Hell, presumably existing in a plane just above it. There are eight layers to the Devildom, and as mentioned during the normal story mode, The Demon King — Lord Diavolo's father — lies willingly dormant at the very bottom. Due to this, Lord Diavolo rules as the de facto king of the Devildom. In the Devildom, there is no sunlight. The world exists in a constant state of darkness at all times, though according to Diavolo there are different degrees of darkness depending on the time. Despite this, demons still adhere to a "day/night" schedule where they sleep and are expected to awaken in the "morning" as evidenced by the fact that the demon brothers often sit down together for breakfast and dinner, as well as go to sleep and attend school/work at specific times. The sky and its constellations are different from the human world's.

17. #17Celestial Realm

    Keys: Celestial Realm

    It's the home of angels such as Simeon and Luke, and the former home of the demon brothers before their fall from grace following the Great Celestial War. Little is known about the realm, but Luke stated that it was constantly daylight all the time (even during the night), which is the polar opposite of Devildom, where it is dark all the time.

18. #18RAD

    Keys: Royal Academy of Diavolo, RAD

    The Royal Academy of Diavolo (commonly known as RAD) is a school for demons in the Devildom. Diavolo says that the purpose of the school is that the population of the Devildom is given an adequate education to have a healthy and well-ordered society. The standard RAD uniform is worn by students attending the Royal Academy of Diavolo. The uniform is an off-black, double-breasted, military-style jacket with a belt, the right side has a half-shoulder cape with a badge of the RAD initials, and a red cloak on the left side. The sleeves are long with a quilted pattern small gold teardrop beads in the intersections, and a solid black band around the wrists. The pants are an off-black with a vertical red stripe. The dress shirts are a teal color.

19. #19Demon Lord's Castle

    Keys: Diavolo's castle, Demon Lord's Castle

    The Devildom area in which Diavolo and Barbatos live. There are several cursed items in the castle but most items are highly valuable, leading Mammon to try sneaking them out to sell them. Common areas include hallways, a labyrinth, Lakeview, a ballroom, a garden, a kitchen, guest rooms, Diavolo's bedroom, and Barbato's bedroom.

20. #20Purgatory Hall

    Keys: Purgatory Hall

    Purgatory Hall is the area in which the angels Simeon and Luke, and the wizard Solomon reside during their time in the Devildom. Purgatory Hall and Luke's room can be seen from the House of Lamentation. Common areas include living room, kitchen, balcony, Luke's Room, Simeon's Room, Solomon's Room

21. #21Reaper's Cave

    Keys: Reaper's Cave

    The cave has five levels, and the first four levels each have a different rule that must be followed in order to avoid terrible punishment. The fifth and deepest level houses "life candles" that represent the souls of angels, humans, and demons alike.

22. #22

    Keys: pact, pacts

    A pact is when a demon and a human create a mutual agreement that allows the demon to do whatever the human commands. The human may command or summon the demon at their will.

23. #23

    Keys: demon, demons

    Lucifer, Mammon, Leviathan, Satan, Asmodeus, Beelzebub, and Belphegor, and Diavolo are all demons. Demons can not resist temptation.

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