Race Vampire
Age Unknown
Partner Chloe d'Apchier
Jean-Jacques Chastel is a vampire who is shown to be a servant of Chlofe d'Apchier in D'Apchier Family Castle at Silver Forest, Gévaudan.
Spoiler Later, Jean Jacques is revealed to be the true Beast of Gevaudan, having made a contract with Naenia to undergo a monstrous transformation.