Gouken (剛拳, Gōken?, "strong fist") is a character from the Street Fighter series. He is Ryu's adoptive father, Ryu and Ken's martial arts master, and Dan's former master as well as Akuma's older brother. Gouken plays an integral role in the series' backstory, and was first depicted as a picture in Akuma's ending in in Street Fighter Alpha. Gouken's first actual appearance as a playable character was in Street Fighter IV as a boss character. He is an unlockable character in the home console version of the game.