Aion is the lead guitarist and composer for the visual kei band Shingan Crimsonz. He is a tall lion Myumon with long, pale blond hair, red eyes, and a dark purple suit with a long tail. He carries himself with a regal and aloof demeanor, often referring to himself as a dark sun god or black monster. Aion has a distinctive need to strike a pose with one hand partially covering his face in order to speak properly; without it, he struggles to articulate his thoughts. He is a recluse who dislikes going outside and frequently mutters to himself. His passion for music drives him above all else, and he channels this through his guitar, the Holy Ark. Aion comes from a wealthy, prestigious family but abandoned his expected role as successor to pursue music, causing a deep rift with his younger sister, Ailane. This conflict is eventually resolved when the two reconcile. During battles against dark monsters, Aion can summon lightning with his guitar, demonstrating that his musical talent carries tangible power.