Mysterion's real name is Kenny McCormick. He is a teen vigilante in a town named South Park. He was originally a part of a hero group called the Coon And Friends, but he left and joined the Freedom Pals. He's immortal and comes back to life after he dies and he is self-sacrificing as a result. He sees his power as a curse. He's calm, calculating, and an excellent strategist. He seems gruff, intense, and authoritative. He prefers hand-to-hand combat over the use of weapons.