|This article is about a/an voice actor in the Super Sentai series.|
Mitsuo Yamaguchi (山口 光雄 Yamaguchi Mitsuo), better known by his stage name of Kappei Yamaguchi (山口 勝平 Yamaguchi Kappei), is a Japanese voice actor and actor.
- Zyuden Sentai Kyoryuger vs. Go-Busters: Dinosaur Great Battle! Farewell, Eternal Friends - ToQger Equipment Voice
- Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai - ToQger Equipment Voice
- Ressha Sentai ToQger: The Movie - Galaxy Line SOS - Ticket, ToQger Equipment Voice, Narration
- Shuriken Sentai Ninninger vs. ToQger The Movie: Ninjas in Wonderland - Ticket, ToQger Equipment Voice
- Tokusou Sentai Dekaranger - Thousanian Gineka (Episode. 34)
- Tensou Sentai Goseiger - Ain-I of the Neutral (Episode 41)
- Hikonin Sentai Akibaranger Season Tsuu - Chief Clerk Blu-Ray, Chief Editor HVD
- Ressha Sentai ToQger - Ticket, ToQger Equipment Voice, Narration
- Ressha Sentai ToQger Vs. Kamen Rider Gaim Spring Vacation Combining Special - Ticket, ToQger Equipment Voice
- Doubutsu Sentai Zyuohger - Illusion (Episode 22)
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