He has appeared in various theatre shows in Germany, but is also known for performing voiceovers for radio plays and audiobooks such as Pascal Mercier's "Night Train to Lisbon", Gilbert Keith Chesterton's "Father Brown", Arthur Conan Doyle's "The Lost World", Agatha Christie's "The Pale Horse" and Robert Louis Stevenson's "The Strange Case of Dr Jekyll and Mr. Hyde". He is also known for voicing Paulie 'Walnuts' Gualtieri from "The Sopranos", Danzo Shimura from "Naruto: Shippuden", Grandpa Lou Pickles from "Rugrats", Old Puffer Pete from "Chuggington", various characters from "Bob's Burgers" and Archibald from the "Arthur and the Invisibles" series.