Grimlock (Cyberworld)
| 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 Cyberworld.

On Cyberworld, might can easily make right, and Grimlock, leader and self-proclaimed king of the Dinobots, certainly has the might to back up his version of right. With his powerful jaws, triple-barrelled cannon arm, and other Dinobots prepared to back him up at a moment's notice, he is a powerful and feared opponent -- which is unfortunate for those who run afoul of his hair-trigger temper. Seriously, don't ask him for any grammar lessons.
| “ | Not just any Dinobot, you speak with ME, GRIMLOCK! KING OF DINOBOTS! | ” |
—Grimlock introduces himself to Optimus Prime, "Commence Program" | ||
Fiction
Cyberworld cartoon
- Voice actor: James Alexander (English), Luis Hurtado (Latin-American Spanish)

Grimlock happened upon a newly-arrived Optimus Prime stealing his rightfully claimed Energon cube in the Cyberworld jungle. Uninterested in making peace, he tried to attack the Prime, chasing him in his dinosaur mode until Prime trapped him between two branches. Commence Program He was able to escape and continue his pursuit of Prime fairly quickly, but Prime again trapped to escape, this time tangling him in jungle vines. Prime Target With his fellow Dinobot, Snarl, they made plans to acquire a nearby crate drop and give themselves a boost in power. Finding Optimus Prime and Bumblebee going for the same crate, they engaged in combat across a mudpool. Prime and Bee were able to trap them in mud while they scaled the cliff, but the Dinobots were able to quickly catch up, riding a rock propelled by a nearby geyser. It was not enough to stop Bumblebee claiming the crate and its weapons for his team, though, and after a trouncing, the Dinobots cut their losses and left. Crate Point, Well Fought
His next meeting with Prime and Bumblebee, as well as their newly recruited friend Elita-1 came when they were seeking out his help for taking on Scorponok. With Snarl having been watching and recording them, Grimlock knew this, and outright refused, seeing them as week. Prime challenged him, one-to-one, in a Hunter vs Hunted mission, where if Prime won, he would agree to help, but if Grimlock won, then Prime and his allies would serve Grimlock. Initially, Grimlock had the upper hand, keeping Prime on his toes until the roles changed, where he began hunting the Autobot leader, but eventually Prime was able to outwit him, use his own jungle traps against him, and win. Grimlock upheld his half of the bargain, even as Snarl warned that this might jeopardise "the truce". Hunter vs Hunted Now part of the Autobot team, they attempted to find more energon, only to be met by Megatron. Megatron chastised Grimlock for violating their truce by teaming up with his nemesis, as the mission module began - a race to the summit of a series of platforms. Grimlock was selected by Optimus Prime to play, alongside Elita-1. While she said to his face she didn't trust him, he still saved her from a boulder trap, with her in turn rescuing him from a magnet trap. Unfortunately, Megatron still knocked him right down to the ground, and the Autobots lost the challenge. With Megatron making threats, Grimlock advised they would have to fight Scorponok soon, before he returned. What Goes Up
Toys
Cyberworld
- Grimlock (Chomp and Battle, 2025)

- Environment: Jungle
- Part of the larger assortment of Cyberworld toys, Grimlock transforms from roughly 9-inch tall robot to robotic T. rex in 4 steps. Both his arms have an action feature gimmick - his removable left cannon arm can spin on a button press, and his right mouth arm has an opening jaw.
- As a larger toy, he has a several ways to interact with smaller Cyberworld figures. In T. rex mode, they can ride atop his back, and his robot mode can be reconfigured into a mech suit for small figures to pilot. Finally, his arms can be removed and turned into a dinosaur-themed turret for smaller figures to sit on.
- You can also swap his arms with Scorponok's if you want to give him a buzzsaw.


