Rex is a green dinosaur. His enhanced ability is mechana-strong. Often, when utilizing this ability, Unicorn refers to him as being "strong like a titanium Tyrannosaurus" which, along with his name and bipedal shape, would indicate that he is a robotic Tyrannosaurus Rex. He is the leader of the animal mechanicals when they are on their journey to their mission. When he transforms, he becomes a cross between a forklift, a tractor, and a digger.Sometimes,Rex always does silly things when it comes to food and he has a little crush on Unicorn.
Like Applejack,Rex possesses the element of honesty.
Yawp and Dander