West's roles in "Futurama" include Philip J. Fry, Professor Farnsworth, Zapp Brannigan, and Dr. Zoidberg, among others. As he and other "Futurama" cast and crew point out in DVD commentaries, he voiced so many characters throughout the series that conversations are often held entirely between characters he is voicing. West went into the "Futurama" auditions and was asked to try out for, as he says, "just about every part". He eventually landed the roles of Farnsworth, Zoidberg, and Brannigan. He later got the main role of Fry, which originally had gone to Charlie Schlatter. While West is known for his original voices, the voice he uses for Fry is often considered to be closer to his natural voice than any other character he has played; in an audio commentary, he states Fry is "just at age 25". This similarity, West acknowledges, was done purposefully in order to make it harder to replace him in the part along with placing more of himself personally into the role.