Monsters vs. Aliens is a American computer-animated science fiction comedy film produced by DreamWorks Animation and distributed by Paramount Pictures. The film involves a group of misfit monsters Susan, a. Ginormica, a woman who was hit by a giant asteroid on her wedding day and grew to be 50 feet tall, B. B, an indestructible gelatinous mass created when a dessert topping was combined with a tomato, Dr.