Parasaurioleus resembles the dinosaur Parasaurolophus, but is a lot larger, entirely bipedal, and covered in armor. Despite being herbivorous, it is highly aggressive, and will attack the hunter with a series of attacks, most notably fire-breathing. They typically have a brownish coloration, with a bright red head crest. When weak or fatigued, Parasaurioleus will eat plants or drink water to regain health and stamina.