The Robot Dinosaur is a giant mechanical constructed by the Robo-Pirates. It appears in the Iron Mountains in all versions of the game. Its main purpose is to prevent the escape of the baby glowboxes, but, Rayman successfully frees them. This then leads to the Robot Dinosaur chasing after rayman.
Its design is a mixture between a dinosaur and a chicken. It has large, raptor-like legs and a shell looking back. The head is pointed and consists of a glass cabinet (where the controller sits).
The Robot Dinosaur is mainly seen Stomping and Crushing those who are to get in the way. With its mechanical legs, it is able to reach speeds that are faster than the walking shells. And It has a tremendous jump capability, which cause everything to lift (sometimes revealing yellow lums)