Gilles De Rais is a complex figure from history, known for his roles as a knight and a military captain, who later descended into madness. In the Fate series, he emerges as Caster, a manifestation of his darker legacy. Once a companion of Joan of Arc, he is cursed with the memories of his heinous acts, marked by both brilliance and brutality. His noble background, coupled with a desire for power and immortality, drives him to engage in dark sorcery. Gilles exudes a magnetic charm, captivating those around him, yet his actions often reveal a sinister side, reflecting his inner turmoil. With interests that delve into the esoteric, he represents both the heights of human aspiration and the depths of moral decay.