Tyrannosaurus Rex is a t-rex that Tippy Tinkletrousers use to get the boys and Captain Underpants. He only appears in the tenth Captain Underpants book, Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers.
History[]
When George, Harold, Sulu, Crackers, Captain Underpants/Mr. Krupp and Tippy Tinkletrousers (along with Tiny Tippy and Slightly Younger Tiny Tippy) are in dinosaur times, Tippy chase the heroes into the jungle by riding a T-Rex.
When Tippy and his bomb blow up in Mexico, Tippy along with the T-Rex and the other dinosaurs got kill.
