Most fearsome and powerful Dinobot. Although dedicated to the Autobot cause, resents authority. Cold merciless, but a valiant warrior. Has contempt for the weak, including all humans. Great strength, uses jaws to break almost anything in two. Carries energo sword and galaxial rocket launcher in Dinobot mode. Other than arrogance and lack of speed, has no real weakness.
Grimlock appeared in the following 248 comic books:
Grimlock appeared in the following 28 cartoon episodes: