Katsumi Morikawa likes to play Vanguard, and is also a little bit of a bully, as seen when he steals Aichi Sendo's card. Later on, he starts hanging out with Aichi, and playing Vanguard with him frequently. He competed in the Shop Tournament at Card Capital. He mainly uses Grade 3 Vanguard cards, which is why he always loses. His best friend is Izaki Yuta.
PersonalityEditMorikawa is a little of a bully, who used to pick on Aichi and had even stolen his prized Blaster Blade card for his own selfish reasons. He later on befriended Aichi. He does not react well to criticism or losing, as seen when Taishi Miwa taunts him when he lost to Toshiki Kai. Whenever he loses a Vanguard fight, he blames it on bad luck, even though it is just bad card-playing.
Katsumi uses lots of Grade 3 cards in his deck and virtually no Grade 2s, so he loses a lot because he cannot make the transition from Grade 0 to 3. His ace card is Juggernaut Maximum.