He is an American voice actor and singer, who has appeared in almost 400 roles. He is known for voicing the title character from Darkwing Duck, Dr. Robotnik from Sonic the Hedgehog, and Pete. His other characters include Winnie the Pooh, Tigger, and the Tasmanian Devil.
He has performed in numerous animated Disney and DreamWorks movies including Aladdin, The Lion King, Balto, Antz, The Road to El Dorado, Shrek, and The Princess and the Frog. He has also provided voice-over work for video games, such as Icewind Dale, Fallout, The Elder Scrolls V: Skyrim, Baldur's Gate, Mass Effect 2, Star Wars: The Old Republic, World of Warcraft: Mists of Pandaria, and Splatterhouse.