The Tyrannosaurus Rex, better known as The T-Rex, is the main protagonist of the Fan-Film Jurassic Park: T-Rex's Revenge. He is a 5 feet tall Tyrant Lizard, a kind-hearted hunter and scavenger, and a vengeful dinosaur after his death because of the main antagonist.
The Lost World: Jurassic Park
He first appeared in the sequel of the 1993 film Jurassic Park. Towards the end of it, he and his son were eating Peter Ludlow and then they were taken back to the land where all the dinosaurs where and there was Rexy from the first film happy to see them as she was comforting his son along with his husband.
Jurassic Park III (His Death)
He appeared in Jurassic Park III eating an unknown herbivore or carnivore until he notices Dr Grant and some other Paleontologists. He starts roaring and chasing them but after he sees the Spinosaurus, like his wife saving Dr Grant, Ellie Satler, John Hammond and his grandkids from The Big One and the raptors, he saves them from the Spinosaurus but failed, thus confirming his death.
Jurassic Park: T-Rex's Revenge (His Revivement)
8 days after Jurassic Park III, a group of Jurassic Park doctors arrive examining The dead T-Rex and they revive him with medical potions and a colossal band-aid around his neck. After that, 10 seconds later (Big joke from The LEGO Movie), The T-Rex gets up and purrs around the doctors and the doctors leaves waving goodbye. The T-Rex walks to find somewhere and finds Dr. Grant and his friends from all three Jurassic Park movies. But when he and his friends re-unite, all the Jurassic Park villains unite to also have their revenge on the good guys.