Geoffrey Peterson is the robot sidekick with a mohawk on the Craig Ferguson show. Aside from appearing in the twitter jingles and introducing the twitter and email segment of the show, he is known for his random phrases and for the fact that his mouth is often agape when he isn't speaking. Though his name is Geoffrey he occasionally goes by the nickname Geoff.
Craig: What time is it Geoffrey Peterson?
Geoff: Hey! What's happening in tweet land?
Viewer at home: This show is amazing!