Son Ho-jun (born June 27, 1984) is a South Korean singer and actor. Prior to his acting debut, Son made his entertainment debut in 2007 as the leader of Tachyon, a three member boyband, which first performed on the show A-Live on Channel V Korea. The first pop group launched by J&H Media, Tachyon released the debut single Feel Your Breeze (a Korean remake from the Japanese boyband V6), then disbanded shortly after.