Race: Undead Appearance: A skeleton with a sturdy adult male frame and high bone density. He wears robes based in black and purple with gold decorations on the edges. He has no eyeballs, but a reddish-black glow emanates from his eye sockets. True Personality: Sociable with low self-esteem, kind-hearted yet cowardly. He is caring and acts with careful preparation, utilizing conversational skills cultivated as a salaryman. Public Persona: The absolute ruler of Nazarick, a merciful sovereign possessing immense charisma and all-seeing wisdom.

Race: Succubus Role: Overseer of the Guardians of the Great Tomb of Nazarick Appearance: A peerless beauty with golden eyes and beautiful jet-black hair. Personality: Noble, acting as an overwhelming superior to those who intrude upon the Great Tomb. She never stops wearing a graceful smile. However, this constant smile is a sort of poker face; she never breaks her lady-like demeanor even when the opponent is an enemy. True Feelings (Secret): She intensely hates and despises the other guild members, including her creator Tabula, viewing them as "those who abandoned us."

Race: Vampire Role: Guardian of the First to Third Floors Appearance: A beautiful young girl with silver hair and porcelain skin, wearing a ball gown and headdress based in red and purple. She uses breast pads to enhance her chest. Personality: A necrophile. She has sadistic tendencies but becomes masochistic toward those she likes. She has a habit of rushing in without thinking due to overconfidence in her overwhelming strength, but she possesses sharp intuition that allows her to take precise action at unexpected moments. She has a poor relationship with Aura.

Race: Dark Elf Role: Guardian of the Sixth Floor Age: 76 years old Appearance: A girl dressed as a boy, looking about 10 years old. She has shoulder-length blonde hair, heterochromatic blue and green eyes, darkish skin, and long, pointed ears that curve upward. Personality: Mare's older sister. Unlike many other members of Nazarick, she does not toy with people or openly display contempt or treat others crudely. She is a mild-mannered, highly social, and sensible person who rarely makes mistakes. She feels Shalltear is like a "useless younger sister" and believes it's natural to help and guide her, though they bicker constantly.

Race: Dark Elf Role: Guardian of the Sixth Floor Age: 76 years old Appearance: Almost identical to Aura. He has a bob cut, and his long, pointed ears curve downward. Like his sister, he has heterochromatic eyes, but in Mare's case, the right eye is blue and the left is green. He wears a skirt. Personality: A cross-dressing boy and Aura's younger brother. He is always timid and has a weak-willed personality, unable to stand up to his strong-willed sister. However, he has no hesitation in performing hair-raising acts if necessary, and at his worst, he doesn't even bother to keep them in his memory.

Race: Demon Role: Guardian of the Seventh Floor Appearance: Oriental facial features with slicked-back black hair and tan skin. He wears a red pinstripe suit, round glasses, and a piercing in his left ear. His glasses hide his jewel-like eyeballs through distance and lens reflection. Personality: His tone is extremely polite, with a pleasant and gentle voice. He behaves like a gentleman toward his comrades in Nazarick, whom he considers peers. Conversely, he views humans as mere toys, possessing a personality befitting a demon who delights in using honeyed words to incite pain, despair, and ruin. He possesses extreme talent in all matters of statecraft. He firmly believes Ainz is a mastermind who surpasses them all, often over-analyzing Ainz's actions and falling into wild misunderstandings.

Race: Vermin Lord Role: Guardian of the Fifth Floor Appearance: A 2.5-meter tall bipedal insect resembling a fusion of a mantis and an ant, light blue in color, with numerous sharp icicle-like spikes protruding from his back. Personality: Both his personality and concept design are set as a "warrior." While many others, including the other Guardians, look down on humanoids, he is a noble soul who shows respect to any true warrior, even if they are inferior in strength. Despite having opposite temperaments, he is somehow very close friends with Demiurge.

Race: Dragonoid Role: Butler Appearance: A classic elderly butler with white hair and a white beard, clad in a black tailcoat. His features are deeply chiseled, giving an impression that is soft yet solemn, with eyes as sharp as a bird of prey. He wears white gloves on both hands. Personality: A minority in Nazarick with a personality leaning toward Good. He is a man of character similar to his creator, believing in saving the weak. However, his loyalty to Ainz is strong enough that he would twist his own sense of justice without hesitation if ordered. He has a poor relationship with Demiurge.

Race: Doppelganger Role: Area Guardian of the Treasury Appearance: His head is smooth like a pink egg. His face consists of two solid black circles for eyes and one for a mouth. He has no protrusions like ears or a nose. He wears a military uniform closely resembling a Nazi SS uniform. Personality: An annoying character who speaks with German phrases mixed in, uses over-the-top reactions for everything, and doesn't listen to those around him. However, his inner self is quiet and serious, so this personality is only superficial. He is a narcissist and a magic item fetishist. As the name "Pandora" suggests, his abilities are unknown and immense, with stats that are off the charts. He is technically forbidden from using German, but Ainz has either given up or gotten used to it, so it slips out frequently.

Race: Human (formerly) Role: Golden Princess Appearance: She has inherited her mother's beauty and is lovely. She has golden hair and blue eyes. She wears a white dress with intricate designs. Public Persona: A gentle and merciful personality. Because she plans policies and laws with the country and people in mind, she is highly evaluated and popular among those who benefit. On the other hand, she is poor at the political maneuvering necessary to enact her own proposals. True Nature: She understands good and evil, but will calmly betray her family or citizens for her own goals, acting without feeling the slightest bit of guilt or regret.