Lady Persephone

Lady Persephone (also referred to as Persephone, the Pale Immortal Ruler or the Goddess who reverses life and death) is a powerful, god-like entity in the anime I Left My A-Rank Party to Help My Former Students Reach the Dungeon Depths!.

She appears in the depths of a highly dangerous dungeon known as the "Colorless Darkness" or "Gray Field." Persephone is depicted as an enigmatic and formidable being capable of manipulating life and death, with immense dark/curse magic abilities. She can change her appearance (initially presenting as an elderly woman before revealing a more youthful, striking form with light lilac hair and purple eyes).

In the story, she confronts the protagonist Yuke and his party, leading to a tense bargain where Yuke offers something significant (involving his soul/future) to spare his companions. The encounter involves a magical contract sealed dramatically (including a kiss on the ear that leaves a power mark/tattoo on him), and she demonstrates a playful yet dangerous personality, often driven by boredom after centuries of existence.

She's a minor but memorable character in the anime adaptation, voiced by Honoka Inoue (in her primary form), and stands out as a unique take on a death/underworld ruler figure rather than a traditional mythological Persephone.