Super Rex is a mutant dinosaur from the TMNT(2012) series. He is the arch enemy of the Turtles, Shredder, and the Kraang.
Super Rex's skeleton was founded by the Kraang, a couple of Mutagen pours on it and revives the dinosaur. It killed 2 Kraang droids and goes on a rampage through out New York. The Shredder, Fishface and Dogpound went to capture Super Rex, but fails. The Turtles fought and defeated Super Rex after he fell into the ocean, and after the fight, Super Rex survived as it comes out of the ocean and roars.