William Richard Werstine, known professionally as Billy West, is an American voice actor, comedian, singer, musician, songwriter and former radio personality. He is known for his voice-work in commercials, films, television series and video games. His roles include the titular characters on The Ren & Stimpy Show and Philip J. Fry, Professor Farnsworth, Dr. Zoidberg, Zapp Brannigan and others on Futurama.