Koryuu (コウリュウ, Kouryuu) was a sumo fighter in the child division of the 25th World Martial Arts Tournament. He cornered Mooki with his sumo attacks, and in the end won by shoving him off of the arena. However, he also knocked the announcer off as well. He seemed like a fairly strong contestant, but unfortunately he lost midway through, and did not make it to the finals.