Lord of the Rings: The Two Towers, Mega Man 6, and... do graphic novels count? If yes, Scott Pilgrim... if no, Anansi Boys...
So... Aragorn, Legolas, Gimli, and Megaman must defend Helm's Deep from an army of 10,000 Uruk-Hai, led by Mr. X's robot masters. Meanwhile, Saruman, Mr. X (Dr. Wily...