Optimus Prime led the Autobots to stop Megatron's attempt to cyberform Earth. After discovering that Megatron's new weapon was the Proudstar, Optimus initially tried to preserve the Cybertronian history contained on its Ferrotaxis supercomputer. Inside the Proudstar, he received a prophecy of his future death from Teletraan Alpha, but he merely expressed happiness that his friends would survive. After the Plasma Core was damaged and proved to be too great a threat to Earth, Optimus reluctantly decided to destroy it and the Ferrotaxis in order to preserve humanity's right to forge their own future. When Megatron shot shot the Ferrotaxis into space in one last spiteful effort to stop the Autobots, Prime rode an Insecticon swarm into Earth's orbit for a final showdown with Megatron, ultimately forced to destroy the Ferrotaxis. Once Megatron was again defeated, Optimus called upon the Autobots to stop merely living upon Earth and adopt the planet as their new home. Later, he and Wheeljack discussed plans for the Optimus Maximus project. Transformers: Devastation
Optimus Primal, leader of the Maximal faction in the Beast Wars animated series and toy line, is not Optimus Prime. Primal is one of the Maximal descendants of the Autobots, who took the name to honor Optimus Prime. The same applies to the Megatron of this era. Before the animated series began, Hasbro envisioned Prime and Megatron as their beast counterparts, but once the animated series began, this had already been changed. Design elements, such as Prime's mouth-plate slitted to add an actual mouth for the animated series and the first mini-comic that came packaged with the toys, suggest this. Nonetheless, Optimus Prime and Megatron were a major reason the Beast Wars began, as Megatron's Predacon namesake traveled back in time seeking to alter history and insure that the Decepticons triumphed over the Autobots.
A redeco/new-head retool of the Rescue Bots Hoist the Tow-bot figure, Optimus Prime transforms from robot into a tow truck. Pulling the tow truck's hook up converts him back into a robot. The panel on the top of the cab has been remolded with additional truck detail in place of the Rescue Bots logo on Hoist, while the Rescue Bots insignia on his torso is unpainted.
If Optimus ordered his troops to come to the humans’ aid, they found themselves taking part in a struggle in futility, as the entire town was near-weightless, meaning they couldn’t put the humans anywhere where they wouldn’t float away once more. Then, the Autobots heard Decepticons approaching. Helpless in their current position, the Autobots were quickly eradicated by the Decepticons.