Let is a Dragonrace, a race of dragon people who reside in the Mystic Realm. When Let was first introduced, he was an evil warrior who worked for Demon Card as a guardian for King. He only wanted to fight until Haru defeated him and showed him the path of justice. His initial appearance in the story is of a human with a lizard like face. In the fight against Jegan he performs Dragon trial and takes the appearance of a human. Soon, he joined Haru in hope of bringing peace to the world.