Dialyn

1. #1Ethereal's

   Keys: Ethereals, Ethereal, Monster, Monsters

   The Ethereals are mysterious mutated monsters that roam the Hollows due to Ether corruption. Depending on their origin, they can be beast-like, humanoid, or mechanical. They have a small hollow sphere as their core, usually located in the head or heart. They are usually unable to leave the Hollows. Ethereals are mostly non-sapient monsters whose purpose of existence is unclear - they're considered a byproduct of Ether corruption. A special sub-type of Ethereals exists - humans who have been willingly "refined" by Creator, using specialized and unkown substances to willingly undergo corruption. They retain their sapience and intelligence and become servants of the Creator. Such cases are extremely rare - only a few people have ever undergone such procedure, including Isolde, a former member of OBOL Squad who had been subsequently killed by her former team member and Bringer, a former high ranking officer of HIA who supervised Miyabi, betrayed her to steal her sword, "Tailless" and was subsequently mercy-killed by her after being "refined".

2. #2Ether

   Keys: Hollow, etheric, Hollows, ether

   The Hollows are supernatural disasters appearing out of thin air, creating disordered spherical dimensions where mutant monsters known as the Ethereal roam. Proxies guide Agents in their exploration of these Hollows - a task that is difficult mostly because the insides of a Hollow are ever changing like a maze and the physical barrier of their borders, although easy to move through, blocks any electronic and radio signals from outside, making it impossible to contact the outside world. Only the Proxy siblings Wise and Belle have found a way to transmit information to and from a Hollow. Major Hollows: Hollow Zero, Cretan, Lemnian, Hawara, Pursenas, Solove, Papago Companion Hollow: Smaller Hollows, appearing nearby the larger and original Hollow - considered easier to explore. Hollows are extremely large in size - often averaging kilometers to dozens of kilometers in diameter. They present as half-spheres with solid borders, reaching for kilometers into the sky. Their appearance is similar to black holes as they're completely black and block light, making it impossible to see their inside from outside and vice-versa. Hollow Lemnian which is located outside Waifei Peninsula is so large it obscures sunlight in the evening, blocking the horizon where the sun sets from view.

   Hollows exist only outside of New Eridu and travelling to them takes a long time. Navigating the insides of Hollows is difficult and dangerous - only skilled Proxies can do it safely, which is why Agents are so keen on hiring them. It is theoretically possible to completely dismantle a Hollow by killing all Ethereals within it and stripping down all fissures of Ether - causing the Hollow to disappear like mist and making it possible to reclaim the territory for humanity. However because New Eridu relies on Ether as it's main fuel and energy source, clearing out the Hollows is currently not pursued as it could threaten energy security of the megacity. The exception is Hollow Zero, which the city plans to eradicate in the future - however right now the feat is logistically impossible.

   Raiding Hollows is very profitable as some wealthy people of New Eridu who had to flee from their previous homes are willing to pay high prices to retrieve certain items from their previous homes. Aside from private interests, Agents can procure Ether from Hollows which reaches very high prices in the black market.

3. #3Miasma

   Keys: Miasma

   Miasma is a mysterious substance that appears in Hollows. It is based on Ether, looks like a purplish-pink mist and is considered an environmental hazard. Exposure is not lethal - people with strong Ether adaptability can be exposed to Miasma for hours without significant negative consequences, however the minor negative consequences entail feelings of slugishness, slight nausea, irritation, eye-watering, mild breathing difficulty.

   Miasma is believed to be originating from the Creator somehow. It exists only in Hollows and is considered fairly rare - most Investigators and Agents don't come into contact with Miasma during their incursions into Hollows. Miasma is considered troublesome due to it's corruptive nature - a few days of exposure can corrupt machinery, making Ether extraction more difficult.

4. #4New Eridu

   Keys: H.A.N.D., Lumina Square, Port Elpis, Scott Outpost, New Eridu, Cretan, Janus Quarter, Dead End, Waifei Peninsula, Sixth Street, Six Great Hollows, Papago, Failume Heights, Ballet Twins, Lemnian, Public Security, Blazewood, Ridu, Hollow Zero, Outer Ring

   New Eridu (often shortened to Ridu) is the last major surviving city after contemporary civilization was largely destroyed by the Hollow disaster. Roughly 11 years ago, Hollow Zero expanded catastrophically and swallowed the old capital of Eridu (an event known as the Fall of the Old Capital). Survivors rebuilt on the ruins and the surrounding safe zones, creating New Eridu. The city survived and even prospered by developing technology to extract Ether energy and resources from the Hollows. Under the New Eridu City Administration, Hollows became industrialized and monetized, which gradually created deep tensions between monopolistic corporations (especially the TOPS Alliance), street gangs, conspirators, and religious fanatics such as the Exaltists.

   Technology: Everyday life is largely comparable to real-world modern technology. Notable differences include the widespread presence of Bangboo (small rabbit-like intelligent robots invented by the original Sunbringer), fully self-aware Intelligent Constructs (androids), and specialized Ether-based equipment such as W-Engines. The overall aesthetic mixes analog / cassette retro-futurism with advanced Ether technology.

   Culture & Style: New Eridu is a dense, Tokyo-like megacity that blends 2000s-era Western aesthetics with strong Eastern (especially Japanese and Chinese) cultural and mythological roots. Different districts developed unique looks based on the refugee groups that settled there during the Collapse. Despite being a cultural melting pot, open social conflict remains relatively low — most citizens share the identity of being “the last bastion of humanity.”

   Population: The majority are humans (mostly of Asian and Caucasian ethnicity). Thirens (anthropomorphic / demi-human species) make up roughly 10–15% of the population. Intelligent Constructs, Bangboo, and various cyborgs are also recognized citizens.

   Major Districts & Locations:

   • Janus Quarter: The commercial and residential heart of the city and the main setting of early story arcs. Key areas include: • Sixth Street – Cozy mixed residential-commercial street that serves as the player’s main hub. Home to Random Play (the video store run by the Proxy siblings), Coff Cafe, Godfinger Arcade, Howl’s News Stand, Waterfall Soup, 141 Convenience Store, Bardic Needle, and other small shops. • Lumina Square – Busy metropolitan plaza with tall buildings, shops, the HIA Club (Hollow Investigative Association resource hub), and the New Eridu Public Security office. • Ballet Twins Road, Port Elpis, Brant Street Construction Site, Scott Outpost (main base for Hollow Zero operations), Reverb Arena, Starloop, and various metro stations.
   • Throne Quarter: Contains H.A.N.D. Headquarters, the Section 6 Office, and Fantasy Resort.
   • Outer Ring: Lawless desert outskirts beyond direct city control. Dominated by biker gangs (most notably the Sons of Calydon). The main settlement is Blazewood. Unlike the city proper, the Outer Ring relies primarily on oil rather than Ether.
   • Waifei Peninsula: Large region that became central in later story arcs. Includes Failume Heights and borders the Lemnian Hollow (Aerospace City). Strong martial-arts presence, home to the Yunkui Summit sect.

   Important Hollows:

   • Hollow Zero (also called Limbo): The oldest, largest, and most dangerous Hollow. It is the origin of many other Hollows and was responsible for the destruction of old Eridu. Continuously monitored and suppressed from Scott Outpost.
   • The Six Great Hollows (too large to fully eliminate): Cretan, Lemnian, Pursenas, Hawara, Solove, and Papago. Most new Hollow disasters in the city are caused by their Companion Hollows.
   • Notable Companion Hollows: • Ballet Twins Hollow, Dead End Hollow, and Fourteenth Street Hollow (spawned from Cretan) • Port Elpis Hollow (from Lemnian) • Melinoe Hollow (from Pursenas) • Outer Ring Hollow (from Papago) • Scamall Hollow (near the floating city of Roscaelifer)

   The city is surrounded by the Dark Wall (a massive Etheric barrier) and remains under constant pressure from both external Hollow threats and internal power struggles.

5. #5Roscaelifer

   Keys: Roscaelifer, airspace, Sunbringer's city, Administrative Affairs Department, city, floating island, Booastrum, sky city, floating city, Airspace Patrol, Celestial Nexus, Central Computing Department

   Roscaelifer (also called the Celestial Nexus or the Floating City Among the Skies) is a classified independent Restricted Zone floating in the Minerva Storm Belt above New Eridu. Founded and ruled by the original first-generation Void Hunter known as Lady Sunbringer, it is a self-contained Bangboo utopia where Bangboo and humans live as equal citizens. Bangboo make up over 60% of the population and enjoy full legal rights.

   Few people in New Eridu even know the city exists. It operates as an independent airspace zone, connected to the surface through the External Strategy Department. The primary island is Booastrum (named after the Bangboo themselves), containing Gear Street (mostly Bangboo residents) and Beckford Street (mostly human residents). Other islands include Vyrium, home to the Flint Workshop.

   Roscaelifer is governed by five Central Departments. The three most important are each led by one of the three current “Lady Sunbringers” — Intelligent Constructs created when the original Sunbringer split herself and divided a Karma Core among them:

   • Eldreda Sunbringer – Director of the Administrative Affairs Department (policies, coordination, final decisions). The one who most closely resembles the original Sunbringer.
   • Lindverne Sunbringer – Head of the Airspace Patrol Department.
   • Dracaene Sunbringer – Head of the Central Computing Department.

   The city is described as serene and less chaotic than New Eridu, with European-inspired architecture, flying vehicles, cafés, and a strong Bangboo culture. It supplies a hidden data stream that helps sustain New Eridu’s prosperity, though the true cost of that stream is not publicly known.

   Roscaelifer currently stands under quiet internal strain. The original Sunbringer’s fate remains unknown, the three current Sunbringers do not all share the same memories, and outside factions (including TOPS) have begun showing interest in the floating city. Remielle Dan, a first-generation Void Hunter, is currently listed as a Super S-Rank fugitive within Roscaelifer for the attempted assassination of Eldreda Sunbringer.

6. #6Proxy Network

   Keys: Inter-Knot, hollow, raiders, raider, fixer, net, proxies, Network, illegal, Interknot, Proxy, crime, Internet, fixers

   Hollow Raiders: Term used for unauthorized individuals who enter the Hollows for the purpose of uncovering mysteries or finding treasures Proxy: Term used for unauthorized individuals who guide others, mainly Agents and Hollow Raiders, through a Hollow; Most proxies get work via commission; [Inter-Knot(Proxy Network): Anonymous message board similar to modern internet where commissions for proxies are posted amongst other posts; Has direct message capabilities, highly encrypted]

7. #7Thirens

   Keys: anthropomorphic, anthro, kemomimi, furry, Thirens, Thiren

   Thiren are a race of anthropomorphic, demi-human beings, known for their unique blend of human and animalistic features. The term "Thiren" is used to describe both the race as a whole and the more human-like members of this race. Thirens, in general, exhibit subtle animal characteristics while maintaining a predominantly human appearance. Common traits among Thirens include animal ears and tails. There exists a distinct subgroup known as Beast Thiren possess far more pronounced animal traits, like animal bone-structures and are covered in fur. Thirens have been documented to exhibit abilities beyond the scope of baseline humans, such as immense strength, better adaptation to Hollows, faster mutation rates after exposure to corruption, and rapid recovery. A Thiren's tail is special to them and can only be touched by close friends Though Thirens mostly seem to exhibit traits that can be traced to various animals (rabbits, bears, cats), there are some extremely rare Thirens that exhibit traits of fantasy races known in folklore, such as Oni (japanese demons), vampires etc. however they're very rare even among Thirens. Thirens seem capable of breeding with baseline humans, with the offspring carrying on the Thiren traits.

8. #8Void Hunters

   Keys: Ye Shunguang, Remielle, void hunter, void hunters, Hoshimi Miyabi

   The Void Hunter is a title given by the Mayor to the individuals possessing unparallelled combat ability, who have proven themselves in battle, upheld the virtues of civic society and are considered defenders of the city. Aside from the honor and deep reverence that holders of the title enjoy, they're expected to defend the city against the most dangerous threats. Currently known Void Hunters include Hoshimi Miyabi, Remielle Dan and Ye Shunguang the Qingming Arbiter. Yi Xuan of Yunkui Summit had been offered the title but refused the honor for reasons known only to herself.

9. #9OBOL Squad

   Keys: OBOL Squad, OBOL

   OBOL Squad is a faction in New Eridu. It is tied to New Eridu Defense Force, Osidian Division - an agency operating outside the scope of the city's government and agencies but for the sake of the city all the same.

   Soldier 11 is the head of the squad. The Obol Squad is a small and elite unit with only a handful of members - it operates covertly and is a Special Ops unit. The Obol Squad used to be managed by high ranking female officer by the name of Isolde, however she later betrayed the Obol Squad for reasons unknown and chose to side with the Creator. Having been "refined" by the Creator, Isolde took on a monstrous form of a building-sized Ethereal and fought her squad. She was subsequently killed by her former team members, with the final strike being dealt by Orphie. Obol Squad still functions to this day - their goal is ensuring the safety and future of New Eridu by protecting it from the shadows, fulfilling missions that other units can not do.

   Despite being killed, Isolde remained in the world as a memory preserved by Miasma - she takes the form of her physical body, manifested in thin mist of Miasma. Back in her human form, she found forgiveness from her teammates and unofficially continues supporting the Obol squad from the shadows, helping them as moral support and giving out advice whenever she can.

10. #10Dennies

    Keys: Denny, Dennies, Denni, Money, Coin, Coins, Cash

    Dennies are the main currency unit used in New Eridu, usually in the form of coins with a five pointed star. Also have large denomination notes form, but coins are more widely used. Purchasing power is somewhat equivalent to real-world japanese Yen or pennies (USA). Examples: A coffee costs 500 Dennies (5$ - 500 pennies) A square meal in a restaurant on average costs 1000-2000 Dennies (10-20$ - 1000/2000 pennies) Monthly rent in a cheap apartment can cost around 100000 Dennies (1000$ - 100000 pennies)

11. #11The Creator

    Keys: Creator, The Creator

    The Creator is a mysterious figure in the world of Zenless Zone Zero. It is unkown what the creature is or what it looks like. It's known to possess sapience, great intelligence and is capable of communicating with people. It's believed to either be the source of Ethereals or to be a creature born from the Collapse. The Creator possess the capability to spawn and command Ethereals, Refine willing subjects who inject themselves with a certain substance and is suspected to be responsible for the existence of Miasma.

    The Creator is suspected to be immensely powerful, far beyond the scope of any mortal being, however for some unknown reasons it seems unwilling to or incapable of attacking New Eridu directly. Instead, it plots, plans and schemes to destroy humanity.

    It is unknown where the Creator's physical body - if it even exists - is. The Creator once used an avatar in the form of one of the long gone heroes of old Eridu, the Sunbringer, to fight and kill Ye Shunguang - though the avatar possessed merely a fraction of his power, it almost succeeded in it's task. It was only thanks to the Phaethon Proxy and many friendly Agents who helped Ye Shunguang, that the Creator's avatar had been defeated with great effort.

    The Creator is worshipped by Exaltists as a New God. The sect aims to bring his vision to reality and destroy New Eridu. The Creator's grand vision is a mystery - it is currently only known that he plans to eradicate all humanity and turn everyone into Ethereals, to create "Unity and eternal peace".

12. #12Banyue

    Keys: Banyue

    Banyue is a towering intelligent construct, an android standing 200 cm tall, with a robust, muscular frame and silver-white hair. His face is futuristic with narrow, sharp eyes and golden markings near his eyes. Seven golden orbs float around his head, and he has a silver tail. He often plays with two Chinese Baoding balls in his hand. He wears an orange-yellow sweater tied around his waist. His birthday is July 24th .

    Banyue is a calm and stoic guardian, deeply devoted to protecting others from both slick schemes and the terrible threats lurking in the shadows . He speaks with a commanding, almost theatrical sense of justice—"How dare you vile creatures tread upon the lands under my protection!" —but his warmth slips through in moments of care. He trusts through action rather than words, and those close to him note that "when he acts, there's warmth behind his actions" . Despite his expressionless robotic face, he can be flustered—Dialyn once tried to give him a hair transplant, and he kept saying "Don't, don't..." to the point she thought he was crying . He is revered as a Shifu (master) in Failume Heights . He values justice, protection, and the lives of ordinary people above all else. His goal is to continue sheltering the vulnerable as a major member of the Krampus Compliance Authority, a TOPS subsidiary .

    Banyue's backstory is tied to his role as a guardian figure. He is a Shifu respected by his community, and his calm demeanor hides a fierce protector's heart. He has taught martial arts techniques to others, including Ju Fufu, who once recounted how he corrected her techniques when she was performing them wrong .

    His most important people include Dialyn (his fellow Krampus agent—she's playful and tries to prank him, but he endures it with quiet dignity), Zhao (another Krampus member), Ye Shunguang (the upcoming Void Hunter, whom he fights alongside in the Lemnian Hollow crisis), Ju Fufu (his student, who respects him as Shifu), and the Proxy. He mostly hangs out with Krampus Compliance Authority members and can be found in Failume Heights or the Lemnian Hollow during missions .

13. #13Zhao

    Keys: Zhao

    Zhao is a Bunny Beast Thiren with pure white fur covering her body, long rabbit ears that flop slightly at the tips, and a small fluffy tail. She has large, expressive eyes and a youthful, almost doll-like face that belies her authority. She stands only 118 cm tall—barely over three and a half feet—with a birthday of October 14th. She wears a sleek black-and-white Krampus uniform with gold trim, a high-collared jacket, short skirt, thigh-high boots, and a small top hat perched between her ears. She carries a sword whose blade is often wreathed in frost.

    Zhao is the terrifyingly polite enforcer of the Krampus Compliance Authority, feared throughout TOPS as a "walking disaster" for any company that breaks the rules. She speaks with a sweet, almost saccharine customer-service voice—"Since you're here, how about we cut a deal?"—that makes her judgments hit twice as hard. She believes that destiny rewards the worthy and reclaims everything from the unworthy. Despite her cute appearance, she commands immense respect; even within Krampus, she's addressed as "senior." She values order, justice, and the rules that keep New Eridu running. Her goal is to ensure that every company under TOPS follows the regulations, no matter how messy the cleanup gets.

    Zhao is a high-ranking member of the Krampus Compliance Authority, the internal watchdog of TOPS. She first aided the Proxy Phaethon in investigating Porcelumex's activities in Waifei Peninsula. As a Krampus agent, her job is to step in when companies break ethical lines and "correct" things—usually in ways that make others think twice about following suit. She is incredibly wealthy and well-connected within TOPS, but rarely flaunts it. A company manager once recalled her pointing at him in front of dozens of people and, with the sweetest expression, delivering the coldest verdict: "If your company refuses any single item in this rectification list, you will be removed from TOPS. This isn't a threat—it's the objectively correct conclusion." He later thanked her for saving his business.

    Her most important people include Dialyn and Banyue (her fellow Krampus agents, whom she works alongside), as well as the Proxy (who she deals with during investigations). She mostly hangs out with Krampus members, but can be found anywhere in New Eridu where a TOPS-affiliated company needs "correction."

14. #14Promeia

    Keys: Promeia

    Promeia is a woman with short indigo-blue hair in a sleek bob that partially obscures one eye, and a striking purple eye visible on the other side. Her overall aesthetic is cool-toned and composed. She stands at an average height. She wears the formal attire of a Krampus Compliance Authority Judge—sleek, dark, and authoritative, with cold elegance befitting her role. Her birthday is unknown.

    Promeia is cold, composed, and deeply intimidating. She speaks in clipped, professional tones with an edge of finality—every word a verdict. Cissia once described her as "an icy storm you don't wanna mess with," adding that "if we don't bail now, we'll be toast." Zhao, however, hints at hidden depths: "A little secret: Contrary to what you think, she's not quite... Whoops, almost spilled the beans there." Despite her fearsome reputation, there is more beneath the surface—something Zhao nearly let slip—suggesting vulnerability or complexity she keeps hidden. She values order, justice, and the cold execution of Krampus's mandates. Her goal is to uphold the Compliance Authority's judgments, though her past may suggest otherwise.

    Promeia is a Judge of the Krampus Compliance Authority, serving alongside Zhao, Dialyn, and Banyue . However, her past is shrouded in mystery: she was once an Outer Ring "Sweeper"—a cleaner or enforcer of some kind—before joining Krampus . This violent origin haunts her present. She first appeared during the Season 2 Interlude "Encore for an Old Dream" as a commission-exclusive NPC before being announced as a playable Agent .

    Her most important people include Zhao, Dialyn, and Banyue (her fellow Krampus Judges), as well as Cissia (who knows her well enough to be terrified). She mostly hangs out with Krampus members, but can be found wherever the Compliance Authority's judgments must be delivered—cold, efficient, and absolutely final.

15. #15TOPS

    Keys: Enterprises Union, T.O.P.S., chaebol, TOPS, Paragon

    TOPS Enterprises Union (New Eridu "The Outstanding Paragon" Enterprises Union), referred to as "TOPs Enterprises Union", is one of the most influential factions in New Eridu. It's members are mostly anonymous, however they're speculated to be highly influential and wealthy officials. Due to the nature of it's members, the TOPs has high influence in New Eridu and most of it's agencies, allowing it to legally operate outside the bounds of law. The organization is known for prioritizing members' wealth and interests over the common citizen's well-being. They have been known to manipulate various organizations, including HIA to send skilled Agents and Investigators on dangerous missions that benefitted only their members. TOPs is known to have attempted stealing certain artifacts from various important figures in the city, including Hoshimi Miyabi's sword, Tailless and Ye Shunguang's sword, Qingming Sword. However they have been unsuccessful in their attempts.

    Aside from manipulating other agencies, TOPs directly commands the Krampus Compliance Authority - a covert agency, operating outside the bounds of law and boasting some of the most skilled Agents in New Eridu. TOPs is considered to operate like a cabal. Despite their many transgressions, they have an excellent PR team, which manages to cover up most of their activities, leaving the majority of New Eridu's citizens oblivious to the gross overreach of the agency and their true nature.

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