The stars of The Muppet Show sketch Muppet Labs, these two are a great team. Bunsen is the mad scientist who is too involved in explaining how his inventions work/function to see their flaws, resulting in his lab assistant Beaker becoming victim to comedy violence. Bunsen has always been performed by Dave Goelz while Beaker was originally performed by Richard Hunt but now is performed by Steve Whitmire. It doesn't really matter who Beaker's performer is, as the characters themselves play off each other exceptionally well; Bunsen is too engrossed in his own perceived genius to realize the pain Beaker is going through when the invention backfires.