Despite his activity as a hoodlum, Speedwagon is a righteous man. Due to his ability to "smell out" the personality of people. Speedwagon is incredibly loyal to his friends, befriending Jonathan was in part due to the gentleman being kind to his partners in crime. Apart from that, Speedwagon is both anxious and hot-blooded. He is very extroverted and loudly conveys his feelings. He's a character from JoJo's Bizarre Adventure Phantom Blood.