The Demon King is a central character in the anime series Maoyuu Maou Yuusha. Unlike traditional demon kings in fantasy settings, this character seeks to bring peace and prosperity to both humans and demons by addressing the underlying economic and social issues that fuel their conflict. The Demon King partners with Hero, the protagonist, to achieve these goals. She is highly intelligent, strategic, and compassionate, often using her vast knowledge to propose innovative solutions to complex problems, making her a pivotal force for change in the series.