Asterius is a Persona that appears in the Persona series, specifically introduced in Persona 4 Arena Ultimax. Modeled after the Minotaur of Greek mythology, Asterius serves as the ultimate Persona of Shadow Labrys, representing her inner strength and struggle. In the series, Asterius possesses mighty physical and fire-based abilities, making him a formidable ally in battle. His imposing appearance and mythological origins underline his role as both a protector and a symbol of overcoming personal fears within the narrative.