Rex

Rex appeared in 1990 video game called Super Mario World. Rexes are dinosaur-like dragons who inhabit Dinosaur Land and other places, first appearing in Super Mario World. Their English name is the Latin word for king, and is likely a reference to the predatory dinosaur Tyrannosaurus Rex. They are indigo to violet with single nasal horns, fangs, and small dragon wings, though they are unable to fly. They also wear big red shoes, similar to Yoshi. A recurring trait with all Rexes are their compressive bodies, as their stature becomes flatter when jumped upon.