One of the characters from the Gouketsuji Ichizoku series.
Reiji is a karateka who works at a construction company to burn off excess energy, and takes his training very seriously. He is polite towards his opponents, but does not do well with minute details. He is also sometimes cheered on in his fights by a group of male cheerleaders known as the "Reiji Ooyama Ohendan".
His cousin sister is Rin Ooyama.