Koji died in Tokyo on May 1, 2014 due to chronic renal failure.
- Ultraman - Voice of Underground People
- Ultraseven - Voices of Alien Cool, Alien Iyros, Alien Poll and Alien Goron
- Fight! Mighty Jack - Voice of Alien Monoron
- Booska! Booska!
- Space Battleship Yamato - General Talon
- GeGeGe no Kitarou (2nd Series) - Konaki Jiji
- Saint Seiya - Libra Dohko
- Dragon Ball Z - Dr. Gero
- One Piece - Zeff and Raoul
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