Monstro is a huge blue sperm whale who appears in Disney's 1940 animated feature film Pinocchio as the fourth and final enemy. Monstro is a nasty, huge whale with a frightening reputation among sailors and sea creatures alike, and he isn't like the typical whale, which is a peaceful animal with exceptions. He will eat everything that comes into his domain, whether it's fish or humans like Geppetto, and he doesn't seem to mind what he eats. He also has a ferocious temper, as Geppetto predicted when he told Pinocchio that making him sneeze would enrage him. Indeed, he chased them aggressively and attempted to kill them because of it. However, his desire for vengeance against Pinocchio and Geppetto ultimately led to his demise, when he smashes his head against a rough cliff while attempting to recapture them.