Jay Snyder, better known under his stage name "Dan Green", is a New York City based voice actor for various Pokémon media, joining the franchise with Season 2 (Adventures in the Orange Islands) of Pokémon the Series' English dub. Dan is best known for his work as Yami Yugi in the Yu-Gi-Oh! franchise, but also is known in the Pokémon series as the second voice of the original Mewtwo, Entei, Professor Birch, and many more.
His official Twitter is:
@DanGreenVoices.