Masato Kobayashi (Japanese: 魔 裟 斗 [Kobayashi Masato], born March 10, 1979) is a Japanese former welterweight kickboxer. He was world champion of ISKA at welterweight under Oriental rules and in 2003 and 2008 was the winner of the K-1 World Championship World Tour. In addition, he was also the founder of the K-1 World MAX World tournament in 2004 and 2007. For the K-1 Rising event in Madrid in May 2012, it was announced that Masato will work as an executive producer for K-1. (wiki)