Ultimate Muscle
Wolfman is a Sumo Yokozuna Choujin. He was modeled after famous sumo wrestler Chiyonofuji Mitsugu and, like him, relied more on strength than weight. He was originally introduced as a contender for the 21st Choujin Olympics and was hostile towards Kinnikuman. After being defeated in a Sumo match by Kinnikuman in the semifinals, he begins to respect Kinnikuman and takes part in combating future threats. He faces Springman in the Devil Choujin arc, but was killed, and later revived by Buffaloman's sacrifice. Prior to the revival series, Wolfman retires from Sumo due to injuries, but despite this he returns to fight the incoming threat of the Omega Centauri's Six Spears, defeating Lunaight. In the anime he is renamed Rikishiman. The "Ultimate Muscle" dub renamed him again as Sosumi. He is voiced by Masashi Hirose.