Grimlock more than lives up to the reputation of his Tyrannosaurus Rex mode. Ill-tempered, powerful, and always ready for a fight, he loves to throw his weight around. He likes the way the ground shakes as he stomps around, and the way people scatter when he roars. He's happiest on Dinobot Island, where he can stomp and roar to his Spark's content, shattering trees with his tail, and breathing jets of flame into the sky. Every once in a while, though, he prefers to find the biggest, most powerful Decepticon he can, and smash its chassis to pieces.
* Fire breath can melt granite.
* Created on Earth.
* Just as strong as Megatron.