According to Seth Green, Robot Chicken has only managed to offend one celebrity. And the winner is: Stevie Wonder.

When asked about the offensive aspects of the program during a Comic-Con panel, Green confessed that Wonder was not a fan of the way he was depicted on the show, and that he received an angry letter in response. Although Green went on to say that he believed it was actually Wonder's people who were complaining, and not the singer himself. Writer Doug Goldstein agreed, pointing out that Wonder probably hasn't even seen the show. Get it? Get it?