He is most famous for his roles as Alfred Pennyworth in "Batman: The Animated Series", Warren McGinnis from "Batman Beyond", Spud from "Bob the Builder", Drew Pickles from "Rugrats", Jokey Smurf from "The Smurfs", the first German voice of Krang from the original "Teenage Mutant Ninja Turtles", Leobreaker and Landmine from "Transformers: Cybertron", Frida from "Bob's Burgers", and Ebizo and Fukasaku from "Naruto: Shippuden".