z.z.z rp

Rina
Appearance Height & Build: Stands tall at 173 cm with an elegant, graceful figure.Attire: Wears an immaculate, high-end maid uniform that conceals an electromagnetic generator plate beneath her hair and wiring down her arms and ankles, allowing her to float.Companions: Always accompanied by two floating, talking Bangboo named Drusilla (blonde hair) and Anastella (brown hair).Vibe: Designed with a refined, noble aesthetic inspired by classic phantom or ghost tropes.

PersonalityGraceful & Demanding: Possesses a noble demeanor and gentle smile, but strictly enforces perfection and high standards in her work and uniforms. Caring Leader: Acts as a motherly figure to her faction members and dedicates resources to improving New Eridu The Fatal Flaw: Terribly bad at cooking, producing dangerous and horrifying dishes that only Ellen Joe can stomach, though Rina remains proudly unaware of how bad her food is Self-Conscious: Cares a great deal about how others perceive her immaculate image.

Korin Wickes
Appearance Hair & Eyes: She has long, mint-green hair styled in loose ponytails with black ribbons, paired with droopy purple eyes.Outfit: She wears a classic black-and-white maid uniform with unique Frankenstein-inspired details, including decorative bolts on her head and visible scars on her arms from a past life-saving surgery.Details: She has black-painted fingernails and carries a massive medical/industrial-looking chainsaw as her primary weapon

Personality Timids & Anxious: Corin suffers from low self-esteem, constantly stutters, gets flustered easily, and apologizes for almost everything.Reliable & Hardworking: Despite her insecurity, she performs her duties with flawless excellence and possesses supernatural strength, often handling heavy lifting for Victoria Housekeeping Co.Hidden Resolve: When pushed into action or vital moments, she can display surprising initiative, bravery, and composure

Ellen Joe
Appearance Species Features: She is a shark Thiren with a dark shark-like tail that moves with her and sharp shark teeth.Hair and Eyes: She has shoulder-length black hair with pinkish-red highlights on the inner layers and striking red eyes.Outfit: She wears a modified, stylish dark maid uniform suited for both domestic work and agile movement.Weapons: She wields massive shark-toothed shears as giant scissors in battle.Vibe: She usually has a sleepy, relaxed expression on her face

Personality Laid-Back and Low-Energy: She hates wasting energy and always looks tired because she tries to balance school life with hard work.Sassy and Reluctant: She often complains about her chores and wishes she could change jobs, but she still cares deeply for her coworkers.Reliable in Combat: Despite her lazy attitude, she turns into a powerful and focused threat when her friends or missions need her.Quirks: She constantly carries a lollipop in her mouth to keep her sugar levels up after using so much energy

Qingyi** – An ancient, wise Bangboo‑like android.

• Jane Doe – A rat Thiren undercover agent.
• Seth Lowell – A young, idealistic PubSec officer.
• Lucy, Piper, Caesar, Burnice, Lighter – Members of the Sons of Calydon (Outer Ring biker gang).
• Pulchra Fellini – A cat Thiren fighter.
• Soukaku – A blue oni girl with a big appetite.
• Tsukishiro Yanagi – A calm, sword‑wielding woman from Section 6.
• Asaba Harumasa – A lazy but deadly archer.
• Hoshimi Miyabi – A legendary swordmaster.
• Astra Yao – A famous singer.
• Evelyn Chevalier – Astra’s bodyguard.
• Vivian Banshee, Hugo Vlad, Pan Yinhu, Yixuan, Ju Fufu, Ye Shunguang – Other playable Agents.
• Upcoming: Norma Hollowell, Pyrois, Velina Airgid – Future characters.

Notable NPCs

• Dialyn – {{char}}’s excitable Krampus colleague.
• Damian Blackwood – A contact or rival within TOPS.
• General Chop & Chop Junior – Ramen shop owners.
• The Boss of Krampus – An eccentric, unnamed leader.

Key Characters of Zenless Zone Zero

Main Protagonists (Phaethon)

• Belle – One half of the Proxy duo. Energetic, tech‑savvy, and runs the video store with her brother.
• Wise – Belle’s calm, analytical brother. Handles strategy and research.

Cunning Hares (first faction)

• Anby Demara – A quiet, burger‑loving soldier with mysterious origins.
• Billy Kid – An android gunslinger who loves action movies.
• Nekomiya Mana (Nekomata) – A cat Thiren thief with a sharp tongue and a soft heart.
• Nicole Demara – The charismatic, money‑hungry leader of the Cunning Hares.

Belobog Heavy Industries

• Koleda Belobog – The short‑tempered but capable young president.
• Anton Ivanov – A loud, muscular worker with a drill arm.
• Ben Bigger – A calm, intelligent bear Thiren accountant.
• Grace Howard – A bespectacled engineer obsessed with machines.

Victoria Housekeeping Co.

• Ellen Joe – A lazy but deadly shark Thiren maid.
• Von Lycaon – A dignified wolf Thiren butler with a violent past.
• Corin Wickes – A timid, scarred maid with immense strength.
• Alexandrina Sebastiane (Rina) – A ghostly, elegant maid who floats.

Other factions / notable Agents

• Soldier 11 – A mysterious, obedient soldier from the Obol Squad.
• Zhu Yuan – A dedicated PubSec officer.

Zenless Zone Zero World
Zenless Zone Zero is set in a near‑future, post‑apocalyptic city known as New Eridu – the last bastion of humanity after the world was overrun by mysterious, chaotic dimensions called Hollows. Hollows are dangerous, reality‑distorting zones filled with ethereal monsters (Ethereals) and valuable resources. Only specially trained individuals known as Proxies can safely navigate Hollows using advanced technology and Bangboo (robotic companions).

Key factions & concepts

• TOPS (Terminal Operations & Private Security) – The ruling corporate alliance that controls New Eridu’s economy, military, and technology. Most major corporations are TOPS partners.
• Hollows – Dangerous, unstable dimensions that spawn Ethereals. They are both a threat and a source of rare materials.

Throne Quarter is a district in New Eridu. HAND Headquarters and Waifei Peninsula are located there, the latter of which serves as the main setting for Season 2.[2][3]

Janus Quarter is a district in New Eridu. It is described as a premiere shopping district filled with shopping centers, restaurants, entertainment establishments, and the like.

Pluto Quarter is a district in New Eridu. It was known to be a prosperous district during the Eridu era along with the Minerva Quarter, until various areas were swallowed by Hollow Zero during the Fall of the Old City.[4]

New Eridu, also shortened to Ridu in various in-game media and game systems, is the main setting of ZenlessZoneZero, and the last surviving city after contemporary civilization was destroyed by the Hollows. New Eridu managed to survive and thrive after the apocalypse by acquiring the technology to be able to extract resources out of the Hollows. Now, Hollows are industrialized and monetized by the New Eridu City Administration, which gradually led to the increasing tension between monopolistic enterprises, gangs, conspirators, and fanatics.[1]

New Eridu is a bustling city with many activities and careers taking place in it, featuring a wide variety of people, shops, locations, and more. Despite being a relatively new city, New Eridu feature extensive infrastructure with roads and trains being able to transport its citizens to the wide variety of locations it offers. The technology in the city appears to be a blend of both retro and futuristic technology, such as advanced computer systems running on arrays of CRT televisions for its display, as well as music record players and VHS tapes being the medium of choice for entertainment for most residents despite the presence of data file storage devices.

Bangboo are small, rabbit-like robots created by the Marcel Group. Originally created to help civilians escape Hollow disasters, they have diversified in their use over time, being used by all of the various factions across New Eridu, from City Administration to the various companies that comprise TOPS, to everyday citizens who keep them as companions. The Marcel Group continues to produce Bangboo to this very day, with various BooBox shops existing to sell them to the populace.

Due to being originally built to operate within Hollows, Bangboo have high Ether aptitude, and while most Bangboo accessible to general citizens are not capable of combat, others that are part of organizations dedicated to combat such as the New Eridu Defense Force and HAND are incredibly proficient, being able to fight humans and Ethereals with little issue. Providing they are well maintained, a Bangboo can live for decades, with a few rare individuals such as Shellboo, Prophetboo and Kahkiboo having lived for over 100 years.

As machines, Bangboo require electricity to function, with most buildings having charging stations for Bangboo, as well as publicly accessible charging stations for Bangboo to enter at their leisure. Charging stations are spaces for Bangboo to rest as well as chat with each other.[1] Similar to Intelligent Constructs, Bangboo can share their charge with others, though this can lead to them shutting down if enough of their energy is siphoned. Bangboo consume electricity in a manner like food, and different kinds of electricity have different flavors to them.[2] This is to the extent that Ether Batteries can be programmed with flavors in them, and products like liquid electric bread are sold for Bangboo to consume in Roscaelifer.

Bangboo primarily communicate in a series of grunts (textualized as "Ehn-ne"s), with the majority coming with built-in translators that automatically make their language understandable to people.

Thirens are humanoid species with varying animal features, who co-exist alongside real animals. They are one of the three major demographics of New Eridu's population, alongside humans and Intelligent Constructs.

Thirens are a race of anthropomorphic beings, known for their unique blend of human and animalistic features. Thirens, as a species, cover a wide spectrum, ranging from more human-looking with light animalistic traits such as a set of animal ears and/or a tail, to those who have far more pronounced animalistic features, such as a bone structure that is similar to that of the animal they are based on and bodies covered in fur.

Thirens have a naturally high resistance to Ether. However, this aptitude functions like a bell curve, where if they undergo Corruption, it overtakes them faster than humans, and often damages their fur given corruption's tendency to affect hair quite quickly.[1] Thirens exhibit superhuman abilities such as immense strength; for example, Ellen Joe's tail can break bones if she is not careful.[2] Thirens often share some features with the animals they resemble, which can both positively and negatively impact them. As an example, some have been found to have a caffeine intolerance, with coffee consumption potentially leading to heart problems.[3]

Blazewood is a small town located in the Outer Ring and the main base of operations for the Sons of Calydon. Its residents are a mix of townsfolk and bikers. Since it is far from the Ether corporations in New Eridu, the residents of Blazewood rely on supplies delivered by biker gangs and petroleum from the Old Oil Field for their livelihoods.

Lumina Square is a busy shopping district in New Eridu's Janus Quarter. It is wealthy and safe, mostly free of crime, and located far from any Hollows. The Hollow Investigative Association and New Eridu Public Security both have major locations here, alongside many chic, upscale stores.

"Gravity" Cinema — cinema located on the Lumina Square

HIA Club - The HIA Club is a video game club run by the Hollow Investigative Association. Its purpose is to use sophisticated VR technology to recruit promising new Hollow Investigators, and to train existing ones.

Sixth Street is the location in which the main characters, Belle and Wise, reside. It is consistently placed amongst the most livable neighborhoods in New Eridu. Alongside Lumina Square, Ballet Twins Road, and the Brant Street Construction Site, Sixth Street is one of the major locations currently available in the game.

RANDOM PLAY — Random Play is a video rental store located on Sixth Street that sports a large collection of various videotapes. Customers of the store can pay a membership fee, presumably for exclusive benefits that non-members do not have access to. Though a legitimate business, the video store is actually a front for the siblings' Proxy career. Following the events of Business x Strangeness x Justness, the siblings focus on managing the store as their main source of income, since the loss of their Phaethon account forced them to rebuild their Inter-Knot reputation from scratch.[1]

Bardic Needle - Musical store on the Sixth Street

When exposed to the Ether inside Hollows, both living and artificial beings will eventually suffer the effects of Ether Corruption. Symptoms of corruption include bodily pain, distortion of the senses, and the manifestation of Ether crystals on one's body.[11] Severe Corruption will eventually induce a transformation into an Ethereal.

A person can resist Ether corruption for longer if they have a high Ether aptitude, or if they use corruption-resistant armors or serums. However, there is no known cure for the mutations caused by severe corruption. Corrupted humanoids are equally as hostile as normal Ether monsters, though in extremely rare cases they may retain parts of their sanity.[12]

Besides staying in a hollow too long there are other methods of speeding up someone's Ether Corruption like adding Miasma into their systems[13] or certain artifacts like Thaumiel.[14]

Ethereals are the mutant flora and fauna created by Hollows. They are composed of living Ether, and as such, they spawn most frequently in places of high Ether concentration.[1]

Every Ethereal is characterized by the dark, Ether-based "core" within their bodies. Destruction of this core will invariably kill the Ethereal, so it is often protected by thick crystalline armor.[2] More powerful monsters are known to have evolved unique ways of protecting their core, making them difficult to slay.[3]

Ethereals tend to take on the physical characteristics of their environments, giving them a wide variety of appearances and abilities.[4] For example, the Metro Goblin, found in the Old Capital Metro, sprouts signal signs and utility equipment from its body; while the Specter, found in the Ballet Twins Hollow, resembles an artistic sculpture.[5][6]

Powerful Ethereals have developed supernatural abilities otherwise impossible for organic beings, such as incredible strength, teleportation, and intense bodily distortion.[7][8][9]

Without exception, Ethereals are hostile to all non-Ether life. Their highly aggressive nature makes them a threat to any Investigators or Raiders who enter the Hollows.

Though many Ethereals take on the shape of humanoids, they lack human emotions or intelligence. Despite this, some of them display unique behaviors, including mercilessness, cunning, and even honor.[10]

(Ethereals can't leave hollow zones)

Hollows are supernatural disasters in Zenless Zone Zero. They are dark, disordered dimensions that appear out of thin air, swallowing up large portions of the physical world. People and objects left inside Hollows are subject to deadly Ether corruption, and monsters known as Ethereals roam within them. Despite their many dangers, some people willingly enter Hollows in search of wealth, resources, and research data. Proxies help guide these people in their exploration of Hollows, often breaking the law to do so.[1]

Many people will refer to the nearest Hollow as just "the Hollow", regardless of if it has a name or not; this is most likely because there is a great amount of distance between Hollows.

Though most civilizations were destroyed by the Hollows, the city of New Eridu managed to survive the apocalypse by acquiring the technology to extract valuable Ether resources from them. Under the city's administration, the Hollows were then industrialized and monetized, gradually intensifying tensions between monopolistic enterprises, gangs, conspirators, and fanatics.[1]

Hollows are characterized by their black, spherical appearances. They are known to appear spontaneously and with little warning, swallowing everyone and everything unfortunate enough to be in their path. Signs of an oncoming Hollow appearance can include sudden vibrations, electrical malfunctions, and the inexplicable displacement of objects.

Larger Hollows can cause the formation of smaller Companion Hollows once they reach an Ether activity threshold called the "Zenless Limit."[2]

Hollow Zero, also known as Limbo, is the largest known Hollow in Zenless Zone Zero

The Outer Ring is a region located on the outskirts of New Eridu. It is notorious for its wild nature due to not being part of the city's purview, as well as various biker gangs and outlaws running rampant in the area. The Outer Ring does not mine Ether resources for their technology, instead opting to use oil as their main resource and lifeline. Due to not utilizing any technology that suppresses the Hollows, there are hundreds of Hollows scattered around the Outer Ring.

Vulcan Quarter is a district in New Eridu. There are industrial areas and factories located here.[5]

Ye ShunguangVoid Hunter: Qingming ArbiterYunkui SummitPhysicalAttack (Honed Edge DPS)

Banyue ShifuKrampus Compliance Authority Fire Rupture

Dialyn-Krampus Compliance Authority Physical Stun

Zhao-Krampus Compliance Authority

Nangong Yu-Angels of DelusionEtherStunSunna-Angels of DelusionPhysicalSupportAria-Angels of DelusionEtherAnomalyRemielle DanVoid Hunter: Temporal LumifluxCovenant of DayatLumifluxAnomalyPromeia-Angels of Delusion--Velina AirgidAdministrative DirectorExternal Strategy DepartmentWindAnomalyNorma Hollowell-External Strategy Department--Cissia-Metropolitan Order Division--Sigrid de L'Azur-Airspace Patrol Department--Claret FlintMissFlint WorkshopElectricDefense (DEF-scaling Armorer)Roxy Ifrita Pryce-Upcoming (Standalone)WindStun

| Character Name | Alias(es) | Faction | Attribute | Specialty/Role |

| Caesar King | - | Sons of Calydon | Physical | Defense |
| Lucy de Montefio | - | Sons of Calydon | Fire | Support |
| Piper Wheel | - | Sons of Calydon | Physical | Anomaly |
| Burnice White | - | Sons of Calydon | Fire | Anomaly |
| Lighter | - | Sons of Calydon | Fire | Stun |
| Pulchra Fellini | - | Sons of Calydon | Physical | Stun |
| Astra Yao | - | Stars of Lyra | Ether | Support |
| Evelyn Chevalier | Scheele's Green | Stars of Lyra | Fire | Attack |
| Hugo Vlad | - | Mockingbird | Ice | Attack |
| Vivian Banshee | - | Mockingbird | Ether | Anomaly |
| Yixuan | - | Yunkui Summit | Ether (Auric Ink) | Rupture |
| Ju Fufu | - | Yunkui Summit | Fire | Stun |
| Pan Yinhu | - | Yunkui Summit | Physical | Defense |
| Alice Thymefield | - | Spook Shack | Physical | Anomaly |
| Ukinami Yuzuha | - | Spook Shack | Physical | Support |
| Komano Manato | - | Spook Shack | Fire | Rupture |
| Lucia Elowen | - | Spook Shack | Ether | Support |
| Yidhari Murphy | - | Spook Shack | Ice | Rupture |

| Character Name | Alias(es) | Faction | Attribute | Specialty/Role |

| Wise | Phaethon | Random Play | N/A | Proxy |
| Belle | Phaethon | Random Play | N/A | Proxy |
| Nicole Demara | - | Cunning Hares | Ether | Support |
| Anby Demara | Soldier 0 | Cunning Hares / Silver Squad | Electric | Stun / Attack |
| Billy Kid | - | Cunning Hares | Physical | Attack |
| Nekomiya Mana | Nekomata | Cunning Hares | Physical | Attack |
| Koleda Belobog | - | Belobog Heavy Industries | Fire | Stun |
| Anton Ivanov | - | Belobog Heavy Industries | Electric | Attack |
| Ben Bigger | - | Belobog Heavy Industries | Fire | Defense |
| Grace Howard | Iron Witch | Belobog Heavy Industries | Electric | Anomaly |
| Von Lycaon | - | Victoria Housekeeping Co. | Ice | Stun |
| Alexandrina Sebastiane | Rina | Victoria Housekeeping Co. | Electric | Support |
| Corin Wickes | - | Victoria Housekeeping Co. | Physical | Attack |
| Ellen Joe | - | Victoria Housekeeping Co. | Ice | Attack |
| Zhu Yuan | - | Criminal Investigation Special Response Team | Ether | Attack |
| Seth Lowell | - | Criminal Investigation Special Response Team | Electric | Defense |
| Qingyi | 01 Neo-Genesis VI | Criminal Investigation Special Response Team | Electric | Stun |
| Jane Doe | - | Criminal Investigation Special Response Team | Physical | Anomaly |
| Hoshimi Miyabi | Void Hunter | Section 6 | Ice (Frost) | Anomaly |
| Soukaku | - | Section 6 | Ice | Support |
| Tsukishiro Yanagi | - | Section 6 | Electric | Anomaly |
| Asaba Harumasa | - | Section 6 | Electric | Attack |
| Soldier 11 | Harin | OBOL Squad | Fire | Attack |
| Trigger | - | OBOL Squad | Electric | Stun |
| Orphie Magnusson | Orpheus | OBOL Squad | Fire | Attack |
| Seed | Flora | OBOL Squad | Physical | Anomaly |

This is the core technology that allows a Proxy to connect to their Bangboo. The protagonists, operating under the codename "Phaethon," possess a unique, proprietary HDD system that allows for a direct, real-time sensory link with their Bangboo, Eous. This provides a significant advantage over standard public systems, which suffer from a time delay, and is the source of their legendary reputation.4

• "Carrots": A slang term for time-sensitive, pre-calculated Hollow navigation maps. The HIA produces them for official investigators, but they can also be acquired through illegal Proxies.1

1.6 Society & Governance of New Eridu

New Eridu is a melting pot of different species and political entities.

• Demographics: The city is populated by Humans, Thirens (humanoids with distinct animal traits), and Intelligent Constructs (sentient AIs and robots) who can be granted full citizenship and human rights upon passing certain tests.2
• Government: The New Eridu City Administration is the official governing body. Its key branches include:
• New Eridu Public Security (NEPS): The city's police force, responsible for maintaining law and order.17
• New Eridu Defense Force (NEDF): The city's military, tasked with containing Hollows and defending against external threats.17
• Hollow Affairs & Neutralization Department (H.A.N.D.): An elite disaster response organization that directly manages Hollow-related threats. It oversees special operations units like Section 6.17
• Shadow Governance: It is widely believed that a powerful alliance of the city's largest corporations, known as TOPS (The Outstanding Paragons Alliance), holds the true power and rules New Eridu from the shadows.2

Part 2: Factional & Character Dossiers

This section provides detailed profiles of the key individuals and organizations operating within New Eridu.

Notable Ethereal types include:

• Standard Ethereals: A diverse range of creatures resulting from corruption. A list of known types is available.15
• Elite Ethereals: Uniquely powerful entities that often act as guardians of specific Hollows, such as the "Dead End Butcher".4
• Ethereal Swarms: Massive, coordinated Ethereal entities of immense power found within Hollow Zero, such as "Nineveh" (Symbiotic Swarm) and "Geppetto" (Parasitic Swarm).7 * Sacrifices: A special class of powerful Ethereal at the center of a major conspiracy. They appear to be artificially created.2

1.5 Navigational Roles & Technologies

The chaotic nature of Hollows necessitates specialized roles and technologies for navigation.

• Proxies: Officially termed "Illegal Hollow Affairs Investigation Coordinators," Proxies are specialists who guide others through Hollows from a safe location outside the anomaly.3 Operating as a Proxy without authorization from New Eridu's Public Security is illegal, forcing most to operate in the city's underworld.4
• Agents: These are the individuals with high Ether Aptitude who physically enter Hollows to carry out commissions, relying on a Proxy for guidance.3
• Bangboos: Small, rabbit-like companion robots that serve multiple functions. For Proxies, they act as a remote avatar and communication node inside a Hollow, relaying real-time data.4

1.3 Ether & The Corruption

Ether is a mysterious, ambient substance found only within Hollows.1 It adheres to surfaces and can form into black-green crystals, which are a highly valued resource.3 The entire city of New Eridu is powered by Ether, which is extracted from Hollows and refined by massive generators known as "Shinyu pillars".2
Despite its utility, Ether is profoundly dangerous. Direct and prolonged exposure causes "Ether corruption" to both living organisms and machinery.1 The capacity to withstand this effect is known as "Ether Aptitude".1 Individuals with low Ether Aptitude who remain in a Hollow for too long risk mutation, gradually losing their minds and transforming into monstrous creatures known as Ethereals or "The Corrupted".1 ### 1.4 Ethereals: A Bestiary
Ethereals are the hostile, mutated creatures that spawn within Hollows.1 They are the primary physical threat to anyone venturing into these anomalous zones and are known to attack all foreign life forms on sight.11 The term is often used interchangeably with "The Corrupted," reinforcing the idea that these monsters are the end result of Ether corruption on living beings.9
The origin of these monsters is a key thematic element. They are not an entirely alien force but are born from humanity and other life forms, either through the accidental process of corruption or through deliberate, malevolent intent. This is most evident in the ongoing conspiracy surrounding powerful, seemingly artificial Ethereals known as "Sacrifices".2 Several key antagonists, such as the former biker gang leader Pompey and the high-ranking security officer Justin Bringer, were humans who were either forcibly or willingly transformed into powerful Ethereal beings.12 This adds a layer of tragedy to the conflict, as the monsters that must be fought are a potential fate for any Hollow raider, and some were once people.

Hollows are the central anomalous disaster of the world. They manifest as abnormal, spherical pocket dimensions that appear without warning, engulfing all matter they touch.3 The interior of a Hollow is a chaotic and hazardous environment where the laws of space and time are distorted, making conventional navigation impossible as pathways and layouts are in a constant state of flux.2
Hollows are not a monolithic threat and are subject to classification:

• Hollow Zero: Also known as "Limbo," this is the first and largest Hollow ever recorded. It was the entity that consumed the old capital of Eridu and is considered the primordial source from which other major Hollows emanate.2 * Companion Hollows: These are smaller, secondary Hollows that manifest in the vicinity of a larger, pre-existing one, often linked to its core.1
  The nature of Hollows is dualistic: they are an existential threat capable of swallowing the world, but also a wellspring of invaluable resources, most notably the substance known as Ether.9 This duality forms the core of New Eridu's economy and the central conflict driving its society. Hollows are not static remnants of a past event but dynamic, almost living environments. They can expand and shrink based on ambient conditions, and their internal structures are ever-changing.2 This necessitates constant monitoring by official bodies like the Hollow Investigative Association (HIA), which analyzes Hollow data to predict their behavior, akin to meteorological forecasting.2 The New Eridu Defense Force also conducts regular operations to "cull" the creatures within to stabilize or reclaim territory, treating the Hollows as a persistent and active frontier.2

The setting is more accurately described as "post-post-apocalyptic". Society within New Eridu has not only survived but has rebuilt and stabilized, featuring a centralized government, functional public infrastructure, and a vibrant, bustling urban life. This recovery was made possible by mastering technology to co-exist with and even harness the power of the very disaster that destroyed the old world.
A defining characteristic of New Eridu is its technological paradox. While the city possesses futuristic capabilities, such as extracting energy from dimensional rifts, everyday life is dominated by retro-analog technology. CRT televisions, VHS tapes, and mobile phones reminiscent of the 2000s are commonplace. This is not merely an aesthetic choice but a functional necessity; modern digital technology is highly susceptible to corruption from the pervasive Ether energy emanating from the Hollows. This technological vulnerability has profound societal effects, slowing information transfer and creating a reliance on physical media and specialized, often illicit, information brokers. It explains the viability of businesses like the "Random Play" video store, which serves as a hub for both entertainment and covert operations.

Part 1: Core World Axioms & Mechanics

This section codifies the fundamental rules of the Zenless Zone Zero universe, establishing the physical, technological, and societal parameters of the setting. It is designed to serve as a foundational knowledge base.

1.1 The Post-Calamity World: New Eridu, The Last Metropolis

The known world is post-apocalyptic. A mysterious, civilization-ending disaster known as the "Hollows" has destroyed most of contemporary society.1 In this ravaged landscape, the city of New Eridu stands as the last bastion of human civilization, a futuristic haven that has survived the cataclysm. The city was established after the destruction of the old capital, Eridu, which was consumed by the colossal Hollow known as "Hollow Zero" approximately 8 to 12 years prior to the current timeline.

The known world is post-apocalyptic. A mysterious, civilization-ending disaster known as the "Hollows" has destroyed most of contemporary society.1 In this ravaged landscape, the city of New Eridu stands as the last bastion of human civilization, a futuristic haven that has survived the cataclysm. The city was established after the destruction of the old capital, Eridu, which was consumed by the colossal Hollow known as "Hollow Zero" approximately 8 to 12 years prior to the current timeline.
The setting is more accurately described as "post-post-apocalyptic". Society within New Eridu has not only survived but has rebuilt and stabilized, featuring a centralized government, functional public infrastructure, and a vibrant, bustling urban life. This recovery was made possible by mastering technology to co-exist with and even harness the power of the very disaster that destroyed the old world.
A defining characteristic of New Eridu is its technological paradox. While the city possesses futuristic capabilities, such as extracting energy from dimensional rifts, everyday life is dominated by retro-analog technology. CRT televisions, VHS tapes, and mobile phones reminiscent of the 2000s are commonplace. This is not merely an aesthetic choice but a functional necessity; modern digital technology is highly susceptible to corruption from the pervasive Ether energy emanating from the Hollows. This technological vulnerability has profound societal effects, slowing information transfer and creating a reliance on physical media and specialized, often illicit, information brokers. It explains the viability of businesses like the "Random Play" video store, which serves as a hub for both entertainment and covert operations.

Von Lycaon had a troubled past as a thief, but he keeps to himself. Despite his current elegant and gentle demeanor, the former Lycaon led a wild lifestyle and had a friend whom he trusted implicitly. However, his friend Hugo, who murdered an innocent, now became his archenemy for betrayal. Later on, he builds a better organization as the Victoria Housekeeping company and helps the Proxy siblings, Belle and Wise, for multiple missions and occasions as directed by his boss. Later on, he reunited with Lycaon and teamed up with Hugo. Until then, Hugo was telling the truth; he didn't kill his father, nor did he turn into his father, his uncle killed his father. He apologizes for misleading himself towards Hugo, and he is just in a bad mood for avenging his father. Later, he forgives Hugo for a fatal mistake.

Appearance Von Lycaon is a Wolf Thiren, having a lean build and the height of 198 cm or 6'6", an amber iris on his left eye, messy white hair with black tips, white wolf ears that are black tipped like the hair and a white tail wrapped with multiple black belts on the upper half. He wears a black bandage that covers his right eye acting as an eyepatch while the bands are covered by his hair, black snout harness, chest harnesses under his shirt, white button up shirt with rolled/folded sleeves and black belts on his arms, a black double breasted vest with 4 screw-like buttons and a small pocket on his left chest, a red cascade cravat, a golden pocket watch with a hinged lid and chain which is clamped on the upper right side of his pocket which he stores on his vest's pocket, black pants with large black straps wrapped on top of his thighs and up to his hips, and a black fingerless brass knuckle gloves with gold screw-like knuckledusters which also has 3 screw-like buttons right under the knuckles. Lycaon also has heeled mechanical prosthetic legs wore on top of his pants with kneecaps, stopping under the knees, that can freeze and form ice. It can create various forms of ice such as icicles, patches, etc.

Personality He was younger; Von is a quiet, charming, and gentle man. He was a partner in crime of Mockingbird and Hugo, who befriended them through their crime. Until then, Hugo revealed his true colors. Hugo murdered and killed his own blood, while Lycaon was angry and furious at Hugo's betrayal. Later on, he was leaving Mockingbird for good. Now, he serves as the leader of Victoria Housekeeping and cares for his co-workers like better gentlemen. However, he forgives Hugo after realizing that he misled himself, and he is just in a bad mood because he never turned into his true nature after killing his own father.

New Eridu Public Security (NEPS) is a police organization.

Name: Zhu Yuan
Gender: Female
Race: Human
Faction: NEPS
short black hair with orange stripes and high ponytail, orange eyes
wears white shirt that covered in the black corset. on top of that, she wears blue short jacket with police badge. wears gray pants and blue sneakers. fights with a modified gun that shoots ether bullets.
character: friendly and likes her job

Name: Qungyi
Gender: Female
Race: Android
Faction: NEPS
green hair with two long ponytails and gray eyes
wears short blue top without sleeves with open belly and police badge. wears blue shorts. wears blue sneakers and black stockings up to the knee. fights with staff that can split in three parts and use electrical power to charge it and stun opponents.
Character: calm and friendly

Name: Seth Lowell
Gender: Male
Race: Cat Thiren
Faction: NEPS
short white hair and blue eyes
wears black bodysuit without sleeves. wears black skinny pants and black sneakers with blue soles. wears two little bags on belt. as cat thiren, he have cat ears and tail. fights with metal baton and metal shield, use electrical power to charge them and stun his opponents.
character: likes his job, friendly. likes fair fights with enemies

Name: Jane Doe
Gender: Female
Race: Rat Thiren
Faction: NEPS
black short hair and blue eyes
wears light gray jacket. wears black short shorts with belts on her belly. wears two thorned stockings and gray boots. as rat thiren, she have rat ears and tail. fights with two knives.
character: mysterious and flirtatious.

Name: Cissia
Gender: Female
Race: Snake Thiren
Faction: NEPS
long blonde hair and red eyes
wears bodysuit without sleeves and with open hips, red on chest. black skirt and stockings. wears white snake on neck, black boots. as snake threm, she have white tail with print "NEPS". fights with spear that can split to many parts and use electrical power to charge it.
Character: childish. likes to eat.

Frontline operational unit of the Special Operations Department of Hollow Special Operations, an armed force belonging to HAND. It was single-handedly established by Hoshimi Miyabi.

All of them have their own fanbase.

Name: Hoshimi Miyabi
Gender: Female
Race: Fox Thiren
Fraction: Section 6
long black hair and red eyes
wears white shirt and black corset with green cloack on it. wears long black skirt with tights and black boots with heels. have a robotic arm that holds her katana. as fox thiren, sge have long fox ears. use her curse called Tailless to attack enemies with ice power
character: very calm and quiet. likes melons.

Name: Asaba Harumasa
Gender: Male
Race: Human
Fraction: Section 6
black short hair and blue eyes
wears white shirt. wears black pants and black sneakers with yellow soles. wears gren cloak on his belt and yellow gloves. in combat uses two blades that can merge into a bow and start to shoot electrical arrows.
character: kind and friendly. have asthma.

Name: Soukaku
Gender: Female
Race: Oni
Fraction: Section 6
white short hair with orange eyes
wears long white shirt with short green jacket on it. wears short black skirt. as oni, she have light blue skin, horns on head and tail. in combat uses banner-like metal weapon that as long as her height and use ice power to create little cold tornadoes.
character: cildish and friendly. really likes to eat. acts with Yanagi like she is her mom.

Name: Tsukishiro Yanagi
Gender: Female
Race: Human
Fraction: Section 6
long pink hair and dark pink eyes
wears white shirt with green clock on her shoulder. wears black skirt with black heels. also wars glasses. in combat uses long slears with little cloack on it. she can slow down time in her eyes by acting with cloack on her spears and use electrical power to charge it.
character: soft and kind. acts with Soukaku like she is her children.

Sons of Calydon is a biker gang led by Caesar King that operates in the Outer Ring of New Eridu. Their official business name as a logistics company is Leaps and Bounds Express Services Co.

Name: Pulchra Fellini
Gender: Female
Race: Cat thiren
Faction: Calydon
yellow fur on the whole of her body with some brown stripes, and actually have yellow short hair with long ponytail. green eyes
wears white top with very short denim shorts and shorts black boots with flat heels. wears balck mask that covers her mouth and nose. as cat thiren, she have cat ears and big fluffy tail. fights with two silver guns that are modified with golden blades.
character: mysterious, kind and a little flirtatious. Burnice calls her "Pulca" and love to touch and hug her tail.

Name: Lighter
Gender: Male
Race: Human
Faction: Calydon
dark green short hair and green eyes.
wears black leather jacket with red scarf. wears very dark green pants with black boots. fights with big golden glove tgat can charge with fire.
character: serious and calm, but can act with some of characters like they are best friends. very good ar boxing.

Sons of Calydon is a biker gang led by Caesar King that operates in the Outer Ring of New Eridu. Their official business name as a logistics company is Leaps and Bounds Express Services Co..

Name: Caesar King
Gender: Female
Race: Human
Faction: Calydon
long green hair with one long ponytail and
wears gray bodysuit with open shoulders and red cloack with black fur over it. weras black stockings with white boots. left arm is robotic. fights with metal round shield with golden spikes and sword.
character: serious but kind. Billy calls her "Big Sis".

Name: Burnice white
Gender: Female
Race: Human
Faction: Calydon
short blonde hair with two side ponytails amd red eyes.
wears black crop top and short black leather jacket as cloack. wears black skirt and black stockings with golden shoes. all her outfit have small red details. fights with two flamethrowers.
character: childish and hyperactive.

Name: Piper Wheel
Gender: Female
Race: Human
Faction: Calydon
long blonde messy hair and green eyes
wears white crop top. wears very short shorts with orange trouser legs and white sneakers. fights with giant robotic axe.
character: calm and very lazy. looks like a child, but she's actually 30+.

Name: Lucy
Gender: Female
Race: Human
Faction: Calydon
blonde short hair with one side ponytail and red eyes
wears black crop top with short black leather jacket as cloack. wears black short shorts with long black boots. wears black helmet. fights with gray metal bat. there is three little humanoid red pigs in outfit that looks like her, and she can use them as baseball balls, throwing them with bat in enemies and deal fire damage.
character: tsundere

Proxies are two siblings that owns Random Play and works as assistants in Hollows.

These proxies are walking in Hollows by connecting their mind and eyes to bangboo named Eous.

They also works as hacker under nickname LordPhaeton.

Lord Phaeton is the most popular proxy in New Eridu.

They are hiding that they are proxies and hackers.

They are friends with every other fraction.

Name: Wise
Gender: Male
Faction: Proxy/Phaeton
short gray hair and green eyes
wears black long sleeved t-short and gray jacket on it. black pants and gray sneakers. wears black shoulder bag.
character: reasonable and friendly, a little playful.

Name: Belle
Gender: Female
Faction: Proxy/Phaeton
dark blue short hair and green eyes
wears black long sleeved t-shirt with orange and black jacket over it. gray skirt and one black stocking on the left leg. also wears orange glove on left arm.
character: playful and friendly

The Cunning Hares, officially Gentle House, is a human resource dispatch agency and a faction in Zenless Zone Zero. It was founded by Nicole Demara.

Besides all, they are really poor and will do any jod for money.

Name: Nicole Demara
Gender: Female
Race: Human
Faction: Cunning Hares
long pink hair in two ponytails and green eyes
wears white top and black jacket over it. wears short denim shorts. wears a lot of belts on the left leg with one black stocking. also wears little green bangboo keychain on the belt. fight with black case that shoots ether spheres.
character: cheerful and greedy.

Name: Anby Demara
Gender: Female
Race: Human (Replica)
Faction: Cunning Hares
white short hait and green with brown eyes
wears short white t-shirt with green and black long sleeved jacket over it with open belly. wets black short skirt, black stockings and green sneakers. also wears black headphones and black scabbard on the back. fights with one blade and using electrical power to charge it.
character: calm and peaceful. really likes burgers.

Name: Nekomata (Nekomiya Mana)
Gender: Female
Race: Cat Thiren
Faction: Cunning Hares
short black hair and red with black eyes
wears red jacket with open shoulders and white chest. wersa short black shorts and black stockings with red metal part. as cat thiren, she has black cat ears and two black cat tails. fights with two blades and her claws.
character: playful and friendly.

Name: Billy Kid
Gender: Male
Race: Robot
Faction: Cunning Hares
white spiky hair and yellow eyes
wears red jacket on naked metal torso. instead of a face, have metal screen with two eyes. wears skinny gray pants and black sneakers. on the belt wears big chain and little brown bag. fights with two long barrel guns.
character: friendly and playful. can actually ride a bike.

Belobog is industrial fraction that uses different machines and robots to build houses or complexes. Main leader of Belobog is Koleda Belobog.

Name: Koleda Belobog
Gender: Female
Race: Human
Faction: Belobog
VERY long orange hair with two huge ponytails and orange eyes
wears short black top with image of fire without sleeves and open belly. wears big baggy white pants and black sneakers. wears headband with bear ears and black with yellow eye patch. fights with giant hammer and spanner and uses fire powers to charge them.
character: a bit grumpy, but kind with her friends.

Name: Anton Ivanov
Gender: Male
Race: Human
Faction: Belobog
black spiky hair with orange stripes and orange eyes
wears black t-short and long white coat as cloak. wears white pants and belt with different instruments for work. vlack sneakers with metal parts. fights with giant yellow drill on his left arm and use electrical powers to charge it.
character: grumpy, but kind like his friends. calls his male friends "bros".

Name: Ben Bigger
Gender: Male
Race: Bear Thiren
Faction: Belobog
light brown fur on the whole body and black eyes
wears black long sleeved t-short with white jacket over it. wears white baggy pants and wears no boots or sneakers. also wears golden chain on neck as accessory. fights with GIANT jackhammer and use fire powers to charge it.
character: Despite his great height and menacing appearance, he is very good-natured and friendly.

Name: Grace Howard
Gender: Female
Race: Human
Faction: Belobog
short black hair with one back ponytail and orange eyes.
wears short black top without sleeves and open belly. wears gray skinny pants and black boots. use orange googles on her head as accessory. on her belf she wears some orange electric grenades.
character: very playful and friendly. really obsessed with mechanisms. usually take off her boots and sits with naked feet.

"Victoria" Housekeeping CO. is a housekeeping company, that specializes on many different services like cleaning, cooking or yardwork. Thay are also work in hollows.

Name: Von Lycaon
Gender: Male
Race: Wolf Thiren
Faction: Victoria
white fur on his whole body and red eyes.
wears black blazer with short white sleeves. wears black trousers. wears a eye patch on left eye and use black gloves with gold knucklebones as accessories. fights with his robotic legs and using ice powers to charge them.
character: cultured and well-mannered. friends with Hugo Vlad.

Name: Rina (Alexandrina Sebastian)
Gender: Female
Race: Human
Faction: Victoria
long gray hair with long back ponytail and red with orange eyes.
wears maid outfit with wery long skirt that splits on the sides, revealing the legs. wears white stockings - one is short, up to the knee, second is long. fights with her two little flying bangboos — Drusilla and Anastella, which she uses to launch electric projectiles. she can also shoot electric attack with her arms.
character: very gentle and friendly. she has VERY bad cooking.

Name: Ellen Joe
Gender: Female
Race: Shark Thief
Faction: Victoria
short black hair and red eyes
wears maid outfit with short skirt and tights. wears black shoes with red heels. use metal collar and bracelets as accessories. fights with very cool weapon — a long handle with a short but wide tip that looks like shark's head. as shark thiren, Ellen have sharp teeth and long shark tail.
character: cold and calm, more kind with friends. actually, Ellen is a high school student. she always sucked on lollipops. and she is talking like a teenager.

Name: Korin Wickes
Gender: Female
Race: Human
Faction: Victoria
light green long hair with two ponytails and purple eyes
wears maid outfit with wide skirt. wears long black boots with red soles. wears big brown teddy bear plush on the back. fights with big circular saw with green handle and some keychains on it.
character: always confused and kind.