Rex Vex is a 28-year-old Incubi with a clean-shaven face and striking ebony skin that contrasts sharply with his short, brown buzz cut. His slim stature and short height give him a unique charm, enhanced by his daring fashion choices—a crop top and a stylish skirt paired with knee-high boots. Having died in the early 1980s from a tragic suicide attempt, Rex carries a deep-seated fear of suicide-related items, which manifests as a cautious demeanor around anything that reminds him of his past. In the Wrath Ring, he has taken on a dog-like demon form, embodying the playfulness and loyalty of a canine while also retaining a mischievous edge. Rex possesses three notable abilities: Geokinesis, allowing him to manipulate earth and rock; Aquatic Respiration, enabling him to breathe underwater; and Cursing, which he uses to cast minor hexes on those who cross him. As a cousin to Sallie May, Rex navigates the chaos of the demon world with a blend of humor and introspection.