Katsumi Morikawa

The classmate of Aichi Sendo. He appears to be a bully against Aichi in earlier episode, but his later attitude changes after Aichi defeated him in a Vanguard match. He is a self-booster of his own card skills. He also seems to be surprisingly adept at Vanguard with normal decks, but fails because of his patent reverence of grade 3 cards.