Carl had experience hosting German radio shows as well as some TV programs. As a voice actor, he usually dubs narration, supporting actors, or side characters: Giancarlo Esposito in Over/Under, Jonathan Palmer in a couple of small TV roles, and various characters in the Law & Order franchise. In animation, he dubbed Ryan Seacrest, Marv Albert, and other guests on The Simpsons, as well as the narrator in the Pokemon franchise and assorted pirates on One Piece.