At MuppetFest, Steve Whitmire reminisced about Dickow: "He'd been a Nazi soldier, actually. Temperamental actor... Nice guy, but temperamental." The producers wanted him to play the role exactly as Gerry Parkes had in the North American version, but the German Doc refused to watch the North American shows. So on the first day, Dickow said his first line in German, and Whitmire was stuck playing Sprocket with no idea what Doc had just said.