He mainly worked with 4Kids Entertainment and Central Park Media, giving his voice to numerous characters in anime and animated series. His best-known roles are:
Professor Birch
Giovanni (Team Rocket leader, in later seasons)
Various side characters and Pokémon voices
Yugi Muto / Yami Yugi (original English-speaking voice, famous for its powerful and dramatic tone)
Knuckles the Echidna (in Sonic X and various games)
Captain Kuro
Several other series such as Chaotic, One-Punch Man (English dub), and Slayers. He also gave acting instruction and directed voice recordings for various productions.
English 
Dutch 
German 
Spanish 
Italian 
French