The incredible Hulk and the calculating Ultron may not be usual enemies, but there’s plenty rival racers dislike about each other. Ultron hates how Hulk makes his own roads by smashing through any obstacle in his path, while the Hulk can’t stand Ultron’s rule-following, as well as the creepy bug legs on his robotic racer. They’ll definitely never see eye-to-eye . . . which is probably why they’re now racing head-to-head!