Grimlock (WFC)
| The name or term "Grimlock" refers to more than one character or idea. For a list of other meanings, see Grimlock (disambiguation). |
- Grimlock is an Autobot from the Prime continuity family.

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Grimlock is a dim-witted yet powerful soldier in the Autobot army. He likes when things go his way, including his craving to be the Autobot leader. He is good friends with Swoop and wields his prized energon sword in battle.
Games
Transformers: War for Cybertron (DS)
- Voice actor: Crispin Freeman (English)
Grimlock and Swoop were two powerful best friends who'd apparently taken no side in the war for the planet. Optimus Prime, leader of the Autobots, came to them to recruit them to the cause. Grimlock dismissed the Decepticon threat, claiming they were "too stupid" to mess with him and Swoop. The Autobots tried to explain that the Dark Energon could ravage Cybertron permanently, but Grimlock and Ironhide almost came to blows. Optimus began playing to Grimlock's self-centered ego, saying no one was stronger than Grimlock and Swoop, to the former's pleasure. Ironhide and Bumblebee joined in, but adding that with Dark Energon, Megatron and his forces could be stronger than Grimlock and Swoop.
Grimlock decided that he and Swoop would consider joining the Autobots, but just as negotiations were to begin, Grimlock noticed Swoop had been missing since the Autobots arrived. Grimlock said they would speak once Swoop was rescued from the Decepticons. Once Swoop was safe, he immediately joined the Autobots in gratitude. Grimlock declared he wouldn't join the Autobots yet, but tag along to protect his best friend.
Grimlock subsequently actively participated in the campaigns to save the Core of Cybertron. Grimlock said that even though the Decepticon army was waiting for them at the Core, all they'd wait for from him was a butt-kicking. Ironhide pondered aloud if it was a good idea to bring Grimlock along, but as Optimus put it, "Do you want to be the one to argue with them?"
Grimlock also participated in the battle against the massive Decepticon Trypticon, and presumably stayed behind with Optimus on Cybertron while the Autobot population evacuated the planet.
Grimlock was apparently wandering around an Energon purification station the Autobots had been using, and picked a fight with the Autobots. To his utter surprise, the Autobots beat Grimlock, and he finally joined them. Transformers: War for Cybertron
Notes
- It's not said in Exodus if he is a member of the Lightning Strike Coalition.

