The headquarters of the guild Ainz Ooal Gown in YGGDRASIL. After Nazarick is transported to the New World with its NPCs, who gain sentience, Ainz begins to take action to protect the tomb. However, the NPCs believe that he is planning world domination and begin to formulate plans of their own; by the time Ainz realizes their intentions, he has no choice but to go along with what they believed his plans were. This eventually leads to Nazarick becoming its own nation: the Sorcerer Kingdom.
- Ainz Ooal Gown (アインズ・ウール・ゴウン, Ainzu Ūru Goun) / Momonga (モモンガ)
- Voiced by: Satoshi Hino (drama CD, anime) (Japanese); Chris Guerrero (English)
- The leader and sole remaining member of the guild Ainz Ooal Gown. Originally, he was a salaryman named Satoru Suzuki (鈴木悟, Suzuki Satoru)[1] who played the VR online game YGGDRASIL, and was transported to the New World following its shutdown. He decides to make himself a legend in hopes of finding his old guildmates and changes his name from Momonga to Ainz Ooal Gown. While he inadvertently sets Nazarick on the path to world domination after a comment he made is misinterpreted, over time he grows into his role as a leader and aims to create a kingdom where humans and non-humans are equal. Due to having the form of a lich, he does not need to eat or sleep and cannot be poisoned or killed by conventional means. As well, although his emotions and empathy are suppressed, he remembers having a "heart" and so maintains some of his humanity. Because of his formerly high level in YGGDRASIL, he can easily overpower even the strongest of magic casters in the New World; despite lacking the skills of natural warriors, he compensates for it with raw strength. Over time, he learns to improve in fighting with physical weapons, but his greatest asset remains his magic. Ainz also has access to a wide variety of instant death and summoning spells which, though ineffective against fellow players, are effective against the inhabitants of the New World. He also has several items he purchased with real money back in YGGDRASIL, which give him abilities ranging from summoning high-level items from the Guild's bank to instantly casting a spell that usually has a long casting time. When traveling incognito as an adventurer, he uses the alias Momon the Dark Hero.
Floor Guardians
A group of NPCs who act as the bosses of Nazarick's floors, having gained great influence over its affairs after coming to the New World and gaining sentience. They are among the most powerful beings in Nazarick, with some exceeding Ainz in stats. Their personalities and quirks come from the backstories the creators programmed into them.
- Albedo (アルベド, Arubedo)
- Voiced by: Yumi Hara (drama CD, anime) (Japanese); Elizabeth Maxwell (English)
- A succubus and overseer of the Floor Guardians, whose beautiful appearance hides a dark personality. Shortly before YGGDRASIL was shut down, Ainz modified her to be in love with him as a joke; as a result, she falls in love with him when she arrives in the New World. Despite being a succubus, Albedo is a virgin, which she is ashamed of; however, she wishes to sleep with Ainz despite it being impossible. She despises humans, viewing them as "lower lifeforms", and also harbors hatred towards the members of the Ainz Ooal Gown Guild for leaving Ainz. While in battle, she wears a suit of armor called Hermes Trismegistus, which repels physical damage, and wields a bardiche named 3F. She also possesses the World Item Ginnungagap, which can be used to devastate large areas.
- Shalltear Bloodfallen (シャルティア・ブラッドフォールン, Sharutia Buraddofōren)
- Voiced by: Sumire Uesaka (drama CD, anime) (Japanese); Felecia Angelle (English)
- A vampire and the Guardian of Nazarick's First, Second, and Third Floors. She is said to be somewhat of a pervert and a necrophile, causing her to fall in love with Ainz and putting her at odds with Albedo. She is the most powerful Floor Guardian in terms of overall stats, specializing in both melee and magic combat. After the Slane Theocracy brainwashes her, she rebels against Nazarick until Ainz kills her and she is later resurrected. Afterwards, she blames herself for her actions despite having had no control over herself; while she later recovers from the incident, she is insecure and often belittles herself.
- Aura Bella Fiora (アウラ・ベラ・フィオーラ, Aura Bera Fiōra)
- Voiced by: Emiri Katō (drama CD, anime) (Japanese); Jill Harris (English)
- An energetic and extroverted girl who is the Guardian of Nazarick's Sixth Floor along with her twin brother Mare. She takes on the form of a young Dark Elf and cross-dresses as a boy. Despite their constant bickering, she is close to Shalltear, similar to the relationship between their creators. Along with Mare, Ainz treats them as if they were his children. She wields a whip and bow and can summon beasts to fight with her.
- Mare Bello Fiore (マーレ・ベロ・フィオーレ, Māre Bero Fiōre)
- Voiced by: Yumi Uchiyama (drama CD, anime) (Japanese); Megan Shipman (English)
- One of the Guardians of Nazarick's Sixth Floor along with his twin sister Aura. He takes on the form of a young Dark Elf and cross-dresses as a girl. Unlike Aura, he is shy and quiet, though it is implied that this personality is an act. Along with Aura, Ainz treats them as if they were his children. He specializes in Druid magic and has the ability to manipulate earth.
- Demiurge (デミウルゴス, Demiurugosu)
- Voiced by: Masayuki Katō (drama CD, anime) (Japanese); Jeff Johnson (English)
- The Guardian of Nazarick's Seventh Floor, who is in charge of its defenses. He takes on the form of a demon who wears a business suit and glasses. He is one of Nazarick's most intelligent and evil NPCs, being willing to commit atrocities and manipulate people to further his goals. While he gets along with the other Guardians, his relationship with Sebas is strained due to their opposing natures, which were inherited from the guild members who created them, who were also often at odds. He believes that Ainz determined his schemes and only reveals parts of his true plans to appease the other Guardians' curiosity. He is known to the people of the New World as Jaldabaoth (ヤルダバオト, Yarudabaoto), an alternate identity he assumed to further his goals without raising suspicion.
- Cocytus (コキュートス, Kokyūtosu)
- Voiced by: Kenta Miyake (drama CD, anime) (Japanese); Bryan Massey (English)
- The Guardian of the Fifth Floor of Nazarick, who is in charge of Nazarick's security and later the Lizardmen tribes. He takes on the form of a four-armed, humanoid insect. He is noble and respects anyone with strong fighting spirit and is closest to Demiurge, who he sees as a rival and a friend. He has the power of cryokinesis and possesses several weapons.
- Victim (ヴィクティム, Vuikutimu)
- Voiced by: Nao Tōyama (Japanese); Marla Acevedo (English)
- The Guardian of Nazarick's Eight Floor of Nazarick, who speaks the Enochian language. It is Nazarick's last line of defense, with its only ability being a self-destruct skill. Despite this, it is humble and modest, believing its sole purpose is to serve the members of the guild.
- Gargantua (ガルガンチュア, Garuganchua)
- The Guardian of Nazarick's Fourth Floor. It is a stone golem which, unlike the other Guardians, is not a custom NPC but an in-game bonus Ainz Ooal Gown won. As a result, it was not granted personality or free will upon coming to the New World. Due to its unique nature, it is noted to be the strongest Floor Guardian, but its strength is weakened by its inability to react on its own.
Area Guardians
NPCs that serve as mini-bosses for a specific portion of a floor. Some of them serve as subordinates to the Floor Guardians, while others act outside the chain of command.
- Pandora's Actor (パンドラズ・アクター, Pandorazu Akutā)
- Voiced by: Mamoru Miyano (drama CD, anime) (Japanese); Eric Vale (English)
- The Area Guardian of Nazarick's Treasury, who Ainz created and is as strong as a Floor Guardian. He has the ability to assume the appearance and abilities of the members of Ainz Ooal Gown, which Ainz uses to have him act as a stand-in when situations require both Ainz and Momon to be active at the same time. Because Ainz created him while going through a chuunibyou phase, he programmed him to act with exaggerated gestures and body language, which now embarrasses him. Despite not being able to spend much time together, he and Ainz share a strong bond, with Ainz allowing him to call him "father".
- Nigredo (ニグレド, Niguredo)
- Voiced by: Kikuko Inoue (Japanese); Trina Nishimura (English)
- The Area Guardian of the Frozen Prison on Nazarick's Fifth Floor, who specializes in information gathering. She is Albedo's older sister, as they were created by the same creator, and they get along well despite being polar opposites in appearance and personality.
- Rubedo (ルベド, Rubedo)
- Nazarick's hidden super boss and Nazarick's strongest NPC. She is Albedo and Nigredo's younger sister, as they were created by the same creator, and Albedo loves her while Nigredo fears her. Ainz is initially wary of her because she might turn against them, but Albedo assures him that she is as loyal as the other NPCs in Nazarick..
Pleiades
A group of NPCs dressed as maids, with the exception of Sebas, who resembles a butler. They serve as Nazarick's last line of defense before the final floor. Though they, with the exception of Sebas and Aureole, are relatively weak, their strength is on par with the legendary monsters of the New World. Despite their appearance, Nazarick's denizens see them more as like an idol group than maids.
- Sebas Tian (セバス・チャン, Sebasu Chan)
- Voiced by: Shigeru Chiba (drama CD, anime) (Japanese); Ed Blaylock (season 1), Bill Jenkins (season 2-4) (English)
- The head butler of Nazarick and overseer of the Pleiades, who takes on the form of an elderly gentleman. Although he is not a Floor Guardian, he has abilities on par with them and specializes in unarmed combat. Unlike other NPCs, he does not hate outsiders, and like his creator, Touch Me, has a strong sense of justice. As a result, he has a habit of trying to rescue those in need, which often brings him into conflict with other NPCs and, on occasion, calling his loyalty to Ainz into question. He does not get along well with Demiurge, due to the poor relationship between their creators. In Isekai Quartet, he appears as a school staff member.
- Yuri Alpha (ユリ・アルファ, Yuri Arufa)
- Voiced by: Hiromi Igarashi (drama CD, anime) (Japanese); Whitney Rodgers (English)
- A dullahan who uses a choker to attach her head to her body and appear human. She is the second in command of the Pleiades, who look up to Aureole like a big sister, and in charge of the Sorcerer Kingdom's orphanage, which was built following the war against the Re-Estize Kingdom. She is programmed to behave like a teacher because her creator was one and holds a neutral stance towards humans, as she does not dislike them but does not want to help them either. She wields gauntlets in battle.
- Lupusregina Beta (ルプスレギナ・ベータ, Rupusuregina Bēta)
- Voiced by: Mikako Komatsu (drama CD, anime) (Japanese); Alexis Tipton (English)
- A werewolf who serves as the group's healer. In public, she is sociable and friendly, but in reality she is a psychopath who enjoys using her healing abilities to torture others. Ainz later assigns her to protect Carne Village.
- Narberal Gamma (ナーベラル・ガンマ, Nāberaru Ganma)
- Voiced by: Manami Numakura (drama CD, anime) (Japanese); Anastasia Muñoz (English)
- A doppelgänger who is permanently in human form as a result of investing her levels into combat abilities; she is the strongest of the Pleiades, being a magic caster who specializes in lightning spells. She serves as Ainz's companion while under his "Momon" identity, going by the alias Nabe (ナーベ, Nābe), during which she becomes known as "The Beautiful Princess" due to her appearance and some of the Pleiades become jealous of her due to her closeness to Ainz. She despises and looks down on humans, which often causes trouble for him.
- CZ2128 Delta (シズ・デルタ, Shizu Deruta)
- Voiced by: Asami Seto (drama CD, anime) (Japanese); Michelle Rojas (English)
- An automaton who is silent and emotionless, and as such holds no particular dislike towards humans. She wields guns and war knives and favors long-range combat, and is the only one who knows how to unlock Nazarick's doors. She likes cute things, and is idolized by the homunculus maids.
- Solution Epsilon (ソリュシャン・イプシロン, Soryushan Ipushiron)
- Voiced by: Ayane Sakura (drama CD, anime) (Japanese); Mallorie Rodak (English)
- A slime in human form who is an assassin and can absorb people and objects into her body to be stored or devoured. Being a Slime, she preys on humans and generally despises and looks down on them.
- Entoma Vasilissa Zeta (エントマ・ヴァシリッサ・ゼータ, Entoma Vuashirissa Zēta)
- Voiced by: Kei Shindo (drama CD, anime) (Japanese); Tia Ballard (English)
- An Insectoid who disguises herself as a human by wearing a mask and changing her voice and has the ability to summon other Insectoids. As an Insectoid, she preys on humans when she is hungry, but otherwise does not consider them worthy of her attention. She holds a grudge against Evileye, who defeated and humiliated her, and seeks revenge against her. She is called the "Predator of Family" because she sometimes eats Kyouhukou's family as a snack, which has caused him to be afraid of her.
- Aureole Omega (オーレオール・オメガ, Ōreōru Omega)
- The secret seventh member of the Pleiades and becomes their leader after Sebas stepped down, as well as the Area Guardian of the Cherry Blossom Sanctuary. She is a human and the only true human in Nazarick. Because of her dual positions, she is often unable to lead the group, with Yuri Alpha serving as leader in her stead. She is in charge of Nazarick's Teleportation Gates. Ainz seems to trust her greatly, as he entrusts her with the Staff of Ainz Ooal Gown when he leaves Nazarick.
Five Worst
An unofficial group composed of Nazarick's five most disgusting NPCs, who each have something that is considered "the worst".
- Kyouhukou (恐怖公, きょうふこう, Kyōfukou)
- Voiced by: Hiroshi Kamiya (anime) (Japanese); John Swasey (English)
- The Area Guardian of the Black Capsule and a member of the Five Worst, holding the title of "Worst Residence". He is a large cockroach who walks on his hind legs and wears a crown and a cloak and holds a scepter. Despite his appearance, he is polite.
- Gashokukochuuou (餓食狐蟲王, Gashokukochuuō)
- The Area Guardian of the Large Hole and a member of the Five Worst, holding the title of "Worst Appearance". It is a parasitic creature, and it and its family are currently residing inside of Hekkeran and Imina, two members of Foresight who were defeated and killed during their attempted raid on Nazarick.
- Neuronist Painkill (ニューロニスト・ペインキル, Nyūronisuto Peinkiru)
- Voiced by: Tesshō Genda (anime) (Japanese); Aaron Dismuke (English)
- Nazarick's investigator and torturer and a member of the Five Worst, who holds the title of "Worst Occupation". Her love for Ainz has caused him to avoid her.
- Chacmool (チャックモール, Chakkumōru)
- Nazarick's musical instructor and a member of Five Worst, who holds the title of "Worst Personality". He views humans as food or toys and commands several Greater Doppelgängers.
9th-Floor
NPCs who work as personnel on Nazarick's 9th-Floor. Having been created as part of the scenery, most of them are level 1 and lack abilities.
- Pestonya Shortcake Wanko (ペストーニャ・ショートケーキ・ワンコ, Pesutōnya Shōtokēki Wanko)
- Voiced by: Satomi Arai (Japanese); Jamie Marchi (English)
- The Head-Maid of Nazarick, who has the body of a human but the head of a Shetland Sheepdog. Unlike most of the 9th-Floor's inhabitants, she harbors no dislike towards humans and has abilities, specializing in healing and resurrection magic.
- Eclair Ecleir Eicler (エクレア・エクレール・エイクレアー, Ekurea Ekurēru Eikureā)
- Voiced by: Nobuyuki Hiyama (Japanese); Kyle Phillips (English)
- The assistant butler of Nazarick under Sebas, who takes the form of a rockhopper penguin. His creator programmed him to have a superiority complex and a desire to take over Nazarick as a joke, but instead he has deluded himself into believing that he will be promoted to the position if he works hard enough. Nazarick's inhabitants are aware of his ambitions, as he constantly brags about them, but they do not care as they know that it is part of his settings and he is not a threat.
- Clavu (クラヴゥ, Kuravū)
- Voiced by: Takuya Satō (Japanese); John Burgmeier (English)
- A mushroom dressed as a barkeep who runs a bar on the 9th-Floor. He tries his best to help his customers with their problems; as such, the tomb's denizens often turn to him for help.
- Shihoutu Tokitu (シホウツ・トキツ, Shihōtsu Tokitsu)
- Nazarick's head chef, an orc who works on the 9th-Floor and provides meals to its denizens. He holds great pride in his job .
Supreme Beings
Ainz's former comrades and the members of the Ainz Ooal Gown guild whom the NPCs now revere as gods. Unfortunately, they all eventually quit the guild and YGGDRASIL as a whole in order to focus on their lives in the real world.
- Touch Me (たっち・みー, Tatchi Mī)
- A player who recruited Momonga into the original Nine's Own Goal and is Sebas' creator. Touch Me was a strong believer of justice and honor which stems from his real life job as a policeman. His doctrine "Helping others is just common sense" helps Ainz to retain some of his humanity, even as an undead. His avatar name was a challenge to attempt to land a blow on him, as, according to Ainz, he never lost a single bout. He was the leader of the original Nine's Own Goal clan, but after a particularly nasty argument with another member who quit the game afterwards, he dissolved the clan out of guilt, and chose Momonga as the new leader of the new Ainz Ooal Gown guild. Touch Me was also one of only nine players to hold the powerful "World Champion" title, which he obtained after winning a major YGGDRASIL tournament.
- Nishikienrai (弐式炎雷, Nishikienrai)
- Narberal Gamma's creator, and original member of Nine's Own Goal. A ninja who possessed high stealth, speed, and attack power to perform quick one-hit kills.
- Wish III (ウィッシュIII, Wisshu III)
- Bujintakemikazuchi (武人建御雷, Bujintakemikazuchi)
- Cocytus's creator, who is also known as "Warrior Takemuchizuki". He was a weapon hoarder and gave Cocytus most of his weapons. His ultimate goal in YGGDRASIL was to defeat Touch Me, often creating swords for this singular purpose.
- Ancient One (エンシェント・ワン, Enshento Wan)
- One of the original members of Nine's Own Goal. He, along with Takemikazuchi, came up with the idea to raid the Great Tomb of Nazarick, making it the guild's main base.
- Flatfoot (フラットフット, Furattofutto)
- The guild's assassin who was skilled in scouting and reconnaissance. He also assisted Peroroncino in creating Shalltear.
- Amanomahitotsu (あまのまひとつ, Amanomahitotsu)
- The blacksmith of the guild. Due to lack of combat abilities, he usually stayed out of fighting.
- Ulbert Alain Odle (ウルベルト・アレイン・オードル, Uruberuto Arein Odoru)
- Demiurge's creator, who was known for his love of the macabre, which is reflected in Demiurge's artistry. In YGGDRASIL, Ulbert possessed the incredibly powerful "World Disaster" class, which made him one of the strongest offensive spellcasters in the game. In real life, both of Ulbert's parents were killed in an industrial work accident, which resulted in him developing a deep hatred for the world and society, and a fixation for evil. This results in him often clashing with Touch Me, due to their opposite beliefs and upbringings. This is reflected in their creations, Demiurge and Sebas, who also frequently argue with each other.
- Peroroncino (ペロロンチーノ, Peroronchīno)
- Shalltear's creator and Bukubukuchagama's younger brother. Despite his high archery skills, he had a reputation in the guild for his immature behavior, and his interest in eroge material.
- Bukubukuchagama (ぶくぶく茶釜, Bukubuku Chagama)
- Marie and Aura's creator and Peroroncino's older sister. In real life, she worked as a voice actress, primarily in eroge media. She and her brother frequently argued with each other, but she would often come out on top in these arguments. The relationship between Aura and Mare seems to reflect her own relationship with Peroroncino.
- Herohero (ヘロヘロ, Herohero)
- Solution Epilson's creator. During his time in the guild, he assisted Whitebrim and Coup De Grâce in creating the homunculus maids. In combat, he would use powerful acid to dissolve the equipment and weapons of other players. He is the only other member of the guild to log in on YGGDRASIL's final day. His avatar is a slime.
- Blue Planet (ブルー・プラネット, Burū Puranetto)
- One of the later members of Ainz Ooal Gown, and Clavu's creator. An avid nature lover, he is the creator of the night sky on the 6th floor of Nazarick.
- Garnet (ガーネット, Gānetto)
- CZ2128 Delta's creator. Thanks to his skills in programming, he created all of Nazarick's traps and gimmicks.
- Bellriver (ベルリバー, Beruribā)
- A magic knight, and original member of Nine's Own Goal. In real life, Bellriver uncovered vital information about the megacorporations that rule Japan. He was later assassinated to keep it from going public, but before dying, he was able to pass the info over to an unknown individual. He is the only known member of the guild to have died in real life.
- Variable Talisman (ばりあぶる・たりすまん, Bariaburu Tarisuman)
- Nearata (ねあらた, Nearata)
- Nubo (ぬーぼー, Nubo)
A member of the guild known for his high perception abilities to detect any intruders, earning him the title "The Eyes of Ainz Ooal Gown."
- Genjiro (源次郎, Genjirō)
- Entoma Vasilissa Zeta's creator. He was tasked with organizing and categorizing the many items that the guild obtained.
- Yamaiko (やまいこ, Yamaiko)
- Yuri Alpha's creator, and one of three female members of Ainz Ooal Gown. Specializing in healing magic, she was known for her kind and gentle personality, despite her rather hideous appearance. She works as an elementary school teacher in real life, and has a younger sister named Akemi who often played YGGDRASIL with her.
- Whitebrim (ホワイトブリム, Howaitoburimu)
- Designer of the homunculus maids. A mangaka in real life, Whitebrim was infamous for his unhealthy obsession with maids, with his latest manga having a maid as the protagonist.
- Punitto Moe (ぷにっと萌え, Punitto Moe)
- A cautious player and master strategist, known for his understanding of player behavior. As the main strategist of Ainz Ooal Gown, Punitto Moe's skills played a role in the guild's reputation as an invincible force.
- Tabula Smaragdina (タブラ・スマラグディナ, Tabura Sumaragudina)
- Creator of Albedo, Nigredo, and Rubedo. Described as a "settings maniac" by Momonga, Tabula was known for being incredibly meticulous in his creations. These include many of Nazarick's traps and security systems, which are said to be very intricate. He was also known for his bizarre interests, including horror movies, the occult, and "gap moe".
- Beast King Mekongawa (獣王メコン川, Kemono-ō Mekongawa)
- Lupusregina Beta's creator, and original member of Nine's Own Goal. He and Nishikienrai were close friends, often playing together in another game called Aberage.
- Tigris Euphrates (チグリス・ユーフラテス, Chigurisu Yūfuratesu)
- An original member of Nine's Own Goal. He is named after the two Mesopotamian rivers of the same name.
- Temperance (テンパランス, Tenparansu)
- Chacmool's creator.
- Suratan (スーラータン, Sūrātan)
- Ankoro Mocchi Mochi (餡ころもっちもち, Ankoro Mocchi Mochi)
- Éclair and Pestonya's creator, and one of three female members of the guild. She appeared to have a fascination for food, and believed that sweets were the answer to ease any tension. She also had a close relationship with her female guildmates, Bukubukuchagama and Yamaiko.
- Shizyuutensuzaku (死獣天朱雀, Shijuuten Sujaku)
- A university professor in real life, he is supposedly the oldest member of Ainz Ooal Gown. He was known for being an avid fan of PKing due to the stress of his job in real life, often imagining his targets as the students and associates who annoy him.
- Luci★Fer (るし★ふぁー, Rushi★Fā)
- A guildmember infamous for being a troublemaker who often played pranks on his guildmates. He also created many of the golems scattered throughout Nazarick. The stone lion in the lady's bath attacks Albedo and Shalltear when they attempt to peep; being a leftover prank from Luci★Fer.
- Coup De Grâce (ク・ドゥ・グラース, Ku Du Gurāsu)
- A guildmember who created the homunculus maids alongside Whitebrim and Herohero.
- Yasa Swi (やさ・ スィ一, Yasa Sui Ichi)