A powerhouse of fighting muscle! Once rebellious, now one of Optimus Prime's most loyal and valiant warriors. Fearsome, powerful, and virtually unstoppable on the battle field. Thick-skinned and stubborn. Never concedes a victory to the enemy. Partnered with a combat-ready anti-tank cannon that fires concentrated bursts of flaming metal. Converts to long-range mortar launcher, equipped with 50-mile firing range. Smarter and more powerful than ever before, Grimlock is often called to lead the charge into battle.
Grimlock with Anti-Tank Cannon appeared in the following 13 comic books: