The dryptosaurus are large green carnivorous dinosaurs from the Tyrannosaur Territories. Unlike most tyrannosaurs, they can also eat plants, and are much more intelligent than T. rexes. Their leader is King Drypto. They are related to the T. rexes and the daspletosaurus. Alson A dryptosaurus is also seen as a servant of King Rokol in Earth Attack!.