Doctor Monstromo was a scientist who studied DNA in hope of creating an army of vicious predators. He owned a private island, hoping to use their DNA in his efforts. Dr. Monstromo captured both the Extreme Dinosaurs and the Raptors, hoping to add them to the mix. In the end it was Hard Rock who managed to defeat Monstromo and his monstrous Griffin. Shutting down his lab before his friends his sinister plans could come to fruition.