Tetje Mierendorf (b. 1972) is a German actor who guest starred on Sesamstrasse in 2008, as a stone age man in episode 2422. Previously, he had dubbed Telly Monster (replacing Franz-Josef Steffens) beginning around 2004. With a background in musical theater, he was also heard on Elmo - Das Musical (Elmo the Musical) as Darth Chicken ("Pizza the Musical") and Ed ("Cowboy the Musical").