Tyrannosaurus are large, carnivorous theropod dinosaurs that lived during the late Cretaceous period. As a result of temporal anomalies created due to the usage of Third Energy, one individual Tyrannosaurus made it to the 21st century. Several Tyrannosauruses serve prominent roles in the Dino Crisis series, appearing as the main antagonist of the first Dino Crisis, as a secondary antagonist in Dino Crisis 2, and as the final antagonist of Dino Stalker.