King Grimlock (TFG)

Fierce, Temperamental, and Arrogant, Grimlock is a Ruthless Monster for the sake of Justice, but not cruel. He is a proverbial wrecking-ball that demolishes any Enemies that he comes across, leaving little in his wake but the smoldering remains of his enemies. He is sullen and not one for talking, damage taken from Experiments and Battles resulting in his Brain Module being less than optimal, giving him a speech impediment that forces him to speak in Third Person and like a Caveman. Despite this, Grimlock is still somewhat tactical, if not a little foolhardy and bold for his own good. He cares deeply for his fellow Dinobots as well as The Technobots, and would die to protect them.

Grimlock was once a Mercenary, but felt a higher calling when the War began, and founded the Dynabots, a Squad focused on destruction, putting him at a rivalry with the Wreckers. He eventually got so proud, he began vying for the spot of Leader, thinking Optimus wasn't fit to lead, often even bullying him. This gave him a bad rep, so he made the Technobots as proof of his brains. However, The Dynabots were captured by Shockwave and experimented on to test their strengths for his own use. When Grimlock broke out he often bucked orders until the day he was to retrieve an Artifact, instead crushing it, starting a freak accident, creating.. THE BEAST! Eventually, after it was defeated by a combination of Autobot Heavyhitters, Grimlock left Cybertron, along with his team. Crashed on Eukaris, they were reformatted by Predacons, whom Grimlock betrayed. The Dinobots they were then found by the Autobots in a time of need. Grimlock now fights his rage and learns to become a True King, unlike his younger self.