 Although he does not provide the voice , Arnold Schwarzenegger is President of the United States rather than then @-@ President George W. Bush because , according to Groening , " in two years ... the film [ would be ] out of date " . Brooks was nervous about the idea , noting that " [ Schwarzenegger 's ] opinion polls were way down " , and has said that they " were [ hoping ] he 'd make a political comeback " . The animators began by drawing an accurate caricature of Schwarzenegger , but one of the staff instead suggested an altered version of recurring character Rainier Wolfcastle as President . This idea was developed , with the design of Wolfcastle , himself also a caricature of Schwarzenegger , being given more wrinkles under his eyes and a different hairstyle . 
