Rexy (also known as Roberta) is a fictional Tyrannosaurus appearing in the Jurassic Park franchise created by Michael Crichton, serving as a major antagonist in the original Jurassic Park novel and film, a supporting protagonist in Jurassic World, a minor character in Jurassic World: Fallen Kingdom, a minor antagonist in the second and third seasons of the Netflix TV series Jurassic World: Camp Cretaceous, and a minor protagonist of Jurassic World Dominion.