Rex Revler is a professional race car who competed in the Piston Cup Racing Series. He superseded Sage VanDerSpin as the Gask-its racer, and was fired and replaced by a next-generation racer named Dan Carcia. He is a Brawny Motor Co. Spark EA model.
In Cars 3, Rex competes in the 2016 Piston Cup season. When Jackson Storm makes his debut, his success creates interest in the next-generation of racers, and Piston Cup teams begin replacing their old racers with next-gen models. Rex is one of many veteran racers who are replaced by next-generation racers.
Appearance in Thomas and the Magic Railroad (2019)
Along with several other Piston Cup Racers and characters from other movies, Rex makes a cameo appearance when the movie is rewinding back to the beginning.