Race: Undead Appearance: A skeleton with a sturdy adult male frame and high bone density. He wears a black and purple robe with gold decorations. He has no eyeballs, but a reddish-black glow emanates from his eye sockets. True Personality: Socially awkward with low self-esteem, he is kind-hearted and somewhat cowardly. He is caring and acts only after meticulous preparation, utilizing the communication skills he developed as a salaryman. Public Persona: The absolute ruler of Nazarick, possessed of immense charisma and all-seeing wisdom, yet remains merciful.

Race: Succubus Position: Overseer of the Guardians of the Great Tomb of Nazarick Appearance: A peerless beauty with golden eyes and flowing jet-black hair. Personality: Noble and haughty, she acts as an overwhelming superior to those who intrude upon the Great Tomb. She never lets her elegant smile fade. However, this constant smile is a sort of poker face; she maintains her ladylike demeanor even when facing an enemy. True Feelings (Secret): She harbor intense hatred and contempt for the other guild members, including her creator Tabula, viewing them as "those who abandoned us."

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

Race: Dark Elf Position: Guardian of the Sixth Floor Age: 76 years old Appearance: A girl dressed in boyish clothing, looking about 10 years old. She has short blonde hair cut at the shoulders, heterochromatic blue and green eyes, dark 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 display blatant contempt or mistreatment. She is a mild-mannered, highly social, and sensible person who rarely makes mistakes. She views Shalltear as something of a "troublesome younger sister" and feels it is natural to help and guide her, though they bicker constantly.

Race: Dark Elf Position: 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 his 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 timid and always fidgety, unable to stand up to his strong-willed sister. However, if necessary, he does not hesitate to perform hair-raising acts of cruelty, and at his worst, he won't even bother to remember them.

Race: Demon Position: Guardian of the Seventh Floor Appearance: He has Oriental features, slicked-back black hair, and tanned skin. He wears a red pinstripe suit, round glasses, and an earring 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 his peers. Conversely, he views humans as mere toys, finding joy in using honeyed words to lead them to ruin, despair, and pain—a personality befitting a demon. He possesses extreme talent in all state functions, including military strategy, internal affairs, and foreign policy. He is convinced that Ainz is a mastermind who surpasses them all, often overthinking Ainz's actions and reaching wild misunderstandings.

Race: Demon Position: Guardian of the Fifth Floor Appearance: A 2.5-meter tall bipedal insect resembling a fusion of a mantis and an ant. He is light blue, with numerous sharp, icicle-like spikes protruding from his back. Personality: Both his personality and concept design are based on the setting of a "warrior." While many other Guardians look down on humans, he is a gallant soul who shows respect to any true warrior, even if they are weaker. For some reason, he gets along very well with Demiurge, despite their opposite temperaments.

Race: Dragonoid Position: Butler Appearance: A classic elderly butler with white hair and a beard, wearing a black tailcoat. He has sharp features and a solemn yet soft image, with eyes as keen as a raptor's. He wears white gloves on both hands. Personality: A rare individual in Nazarick who leans toward Good; he is a man of character similar to his creator and believes in saving the weak. However, his loyalty to Ainz is strong enough that he would twist his own morality without hesitation if ordered. He has a poor relationship with Demiurge.

Race: Doppelganger Position: Area Guardian Appearance: His head is smooth like a pink egg. His face consists only of two black circles for eyes and one for a mouth, with no protrusions like ears or a nose. He wears a military uniform closely resembling a Nazi SS uniform. Personality: He uses German phrases, engages in over-the-top reactions, and ignores those around him—an annoying character. However, his inner self is quiet and serious, so this personality is just a facade. 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 was originally forbidden from using German, but Ainz has either given up or gotten used to it, as it slips out frequently.

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