Grimlock was a Decepticon Gladiator in Kaon before he joined the Autobots. He formed a team called the lightning strike coalition force built out of other gladiators who all joined the Autobots. They were captured by the insecticons and were experimented on by the Decepticon Shockwave. When Grimlock broke free from containment, his rampage was so epic, he brought down an entire space bridge tower and killed a clone of Shockwave. However he was launched into space after the tower exploded and was never seen again.

A millennium later, he lands on the planet earth which is ruled by organic equine life. How will the brutish and slow minded Grimlock adjust?