Welt was introduced as being very persistent in his goal of helping as many people as possible and vanquishing the Houkai beasts, as a result of his determination to become a hero who would one day save the Earth in honor of Welt Joyce. Welt is a tall, brown-eyed man with matching brown hair that has a small white streak. He wears a gray and white dress coat with a scarf and black armor on his chest. He also wears glasses, dark brown pants, black shoes, and a black glove on his right hand.