Tesshō Genda (玄田 哲章 Genda Tessho?), born Mitsuo Yokoi (横居 光雄 Yokoi Mitsuo?) is a Japanese voice actor. He provided the voice of Stacker Pentecost in the Japanese dub[2][3] of Guillermo del Toro's Pacific Rim.


Along with voice actors such as Akio Ōtsuka, Shigeru Chiba and Kōichi Yamadera, Genda is one of Japan's most prolific voice actors, with 234 roles credited to his name as of September 25, 2007.

He provided the voice of Optimus Prime/Convoy in the original Transformers series and the Japanese dub of the 2007 Transformers film directed by Michael Bay.

His work in animation includes, City Hunter, Cooking Papa, Crayon Shin-chan and Tigger in Winnie the Pooh multimedia. Aside from Optimus Prime, Genda also provides the voice of Batman in the character's respective live action and animated feature films.


  • Genda's name is sometimes romanized in credits as Tessyou Genda, Tetsuaki Genda, and Tetsusyo Genda, though the latter two spelling/romanizations of his name are incorrect.
  • In February 2010, he received a Merit Award from the 4th Seiyu Awards.[4]


  1. 1.0 1.1 1.2 Tesshô Genda - Internet Movie
  2. Tomokazu Sugita, Megumi Hayashibara, Tohru Furuya Cast in Pacific Rim Film's Dub
  3. duvallon: Stacker and Mako
  4. "Some of the 4th Annual Seiyū Award Winners Revealed". Anime News Network. February 16, 2010. Retrieved February 16, 2010.