From Bulbapedia, the community-driven Pokémon encyclopedia.
Michael Haigney was a voice actor, voice director and English-language adaptation writer under 4Kids Entertainment for its dub of the Pokémon anime.
Haigney was the original voice director on Pokémon, and was also one of the original voice actors, originally providing fill-in voices for Pokémon that had not been cast. In Advanced Challenge, Haigney left the series. After his departure, stock footage was used to voice Brock's Geodude in Grating Spaces!, as well as Ash's Snorlax in Wheel Of Frontier.