Ginormica and her mutant pals look to seize control of the North American box office with the animated 3D adventure Monsters vs. Aliens which will try to overtake a group of not-always-fully-dressed superheroes for the biggest opening weekend of 2009. Two other new releases also hit the multiplexes on Friday, the spooky horror flick The Haunting in Connecticut and the cop actioner 12 Rounds, but will attract much smaller numbers.