Jonathan Paspierre is a member of the Gui Carlin mafia group and operates as Patricia Pearl's partner. He presents himself as an artist and sadist, claiming to understand people through inflicting pain. His appearance features blond hair, and he typically wears a coat.

Psychotic and self-aggrandizing, he derives pleasure from causing suffering, framing his violent actions as artistic expression. His role centers on stealing the Black Fairy Tome from Free Underbar during a confrontation at a café. Following the theft, he stalks Marlya Noel through underground passages and attacks her with knives and ice picks. During their encounter in a church, he stabs Marlya, but Veronica Thorn intervenes. Jonathan questions Veronica's interference before engaging her in combat. He summons his fairy, which creates explosive projectiles and sets defensive rings of fire. The fairy explodes, scattering knives. Veronica ultimately kills him with her fairy after he escapes the burning building.

A skilled assassin specializing in close-quarters combat, Jonathan employs knives and ice picks to torture targets.