He is a guild member of Ainz Ooal Gown and regarded as one of the 41 Supreme Beings by the NPCs of the Great Tomb of Nazarick. He is a fan of eroge and the creator of Shalltear Bloodfallen.

Peroroncino was known in his guild for his perversion and love of eroge. His personality is reflected in his creation, Shalltear, who was designed to have the most sexual fetishes out of all the NPCs in Nazarick. He was the type who enjoyed joking around and disliked damaging relations between companions.