There are 2 video game music composers whose names romanize to Kenji Yamamoto. 1) Kenji Yamamoto ( 山本健誌 ) used to work for Nintendo as a composer. He composed the music for most of the Metroid series (starting with Super Metroid), the Famicom Tantei Club series and numerous other games like Mike Tyson Punch Out. 2) Kenji Yamamoto ( 山本健司 ) has been a composer for the Dragon Ball / Z series of games licenced by Bandai, starting from the SNES era to the recent PS2 one. He released several arrange albums of his compositions.