From Bulbapedia, the community-driven Pokémon encyclopedia.
Marc Thompson (born 19 November, 1970) is an American voice actor for the English-language dub of the Pokémon anime.
Besides doing voice-over work, Thompson is a minister in the International Churches of Christ - New York Chapter. He graduated from the Tisch School at New York University in 1997.
Thompson began voicing Pokémon characters during mid-Johto. He provided many minor/additional voices until 4Kids Entertainment gave up the dubbing and distribution of the series to Pokémon USA and TAJ Productions. He returned to the series in Journey to the Unown!, where he provided the voice of Saturn. In the Best Wishes series, he gained many important roles in Pokémon, portraying Don George, the Unova Pokédex, Ash's Pignite, Ash's Krokorok, and Dr. Zager.