Roscoe is a former friend of Roger's, who is now a producer in Nashville.
Roger decides to get back into country music in "Echoes" on discovering that Roscoe is now a producer. Despite Roscoe's reservations because he'd managed to whip most of his former bandmates, including Roscoe himself, Jeff speaks up for Roger and earns him a second chance. During the recording session, his bandmates timidly try to stay their distance in preparation of his whip crack, but he blows his cue. When the producer decides to insert a prerecorded whip crack, Roger tries to prove that he can do it and ends up whipping all of his bandmates, as well as himself.
Roscoe is voiced by Chris Diamantopoulos.