Kōichi Yamadera (Kanji: 山寺 宏一, born June 17, 1961) is a Japanese actor, voice actor, narrator and singer from Shiogama, Miyagi Prefecture. He graduated from Tohoku Gakuin University's economics school and is currently affiliated with Across Entertainment. Before that, he was affiliated with the Tokyo Actor's Consumer's Cooperative Society.
Voice Acting Roles
Games
- Denki Hero Roboman Chuu (1994) - Roboman
Movies
- Thomas & Friends: The Great Engine War (2019) - Diesel 10
OVAs
- Madou Monogatari (1991-1993) - Satan
- Meitantei Shōjo Kaori (2000) - Adalbretch Hämmerli (ep. 1)
- Dame Oyaji (2004) - Rokubee
- Ponpoko 4-Kyoudai World Tour (2006) - Chef/Butler
TV
- Jewel Marquise (1985-1986) - Roboman (ep. 31)
- Pac-Man (1988-1989) - Pac-Man
- Joshikousei Aragoto Kabuki Girl (1989) - Narrator
- TonPonCon 90 (1990-1991) - Pon
- Denki Hero Roboman Chuu (1994) - Roboman
- Chō-Base (1995)
- Futari no Kōkyōkyoku (2001-2002) - Reijirō Kazato
- Shin Denki Hero Roboman (2017-2018) - Roboman