The Toy Story dinosaur whose game-player alter ego is T-Rex is named Rex. In the Toy Story video game created around his character, Rex is associated with the T-Rex identity while retaining the personality of Pixar’s nervous green dinosaur.
Rex is one of Andy’s toys and is portrayed as a plastic tyrannosaurus. His character is intentionally comic: he has sharp teeth and a dinosaur shape, yet he is anxious about frightening others and frequently doubts his abilities.
The T-Rex wording can cause confusion because Toy Story also includes Buzz Lightyear’s imagined battles with Emperor Zurg and several toy characters based on action-adventure ideas. Rex’s identity is much simpler: he is the dinosaur toy in Andy’s group, and the game’s title uses his species as a playful label.
The character was voiced by Wallace Shawn in the films. Rex’s popularity led to appearances beyond the main movies, including games, shorts, and merchandise.