Grimlock

Grimlock is a fictional character of the Transformers franchise. He is usually portrayed as the leader of the Dinobots, a subfaction of Autobots who can transform into dinosaurs. Grimlock is best known for speaking in the third person and transforming into a Tyrannosaurus. He appeared on screen along with other Dinobots in the fourth installment of the Transformers film series. Grimlock has become a staple character of the Transformers franchise, appearing in cartoons, comic books and video games. There are numerous toys and other forms of merchandise made in his likeness.