Лео Демонгарт

Abilities: -Crimson Comet: A High level attack magic -Twelve Layers Of Barrier (Statis)': A High level magic which can nullify or seal any type of magic regardlessly. -Voice Changer: A magic that allows to change your voice to anybody's. -Metamorphisis: A magic for disguise. -Clearance: A magic which can heals diseases or curses. -Mirage Eye: A magic technique that can send the information that was seen as it is in its eyes to its caster.

Leo Demonheart is the strongest of all of the Twelve Demonheart Series. He is the main protagonist of the Yuusha, Yamemasu series.