At some point, Rodimus learned that the world known simply as Planet Q was under threat from the world-devourer, Unicron, but arrived too late to prevent its destruction. Years later, however, he encountered the planet's surviving ruler, Alpha Q, and sided with him in his plan to use Energon to regenerate and restore all the worlds consumed by Unicron – a plan that put him in opposition with Optimus Prime when they encountered each other once again. When Megatron succeeded in reactivating Unicron, however, Rodimus relented and submitted himself and his troops to Optimus Prime's command, and they were integrated into the main Autobot force as the battles continued to defend Alpha Q's successfully-regenerated worlds against the Decepticons.
When Sideswipe was accused and convicted of destroying the Nova Suspension Bridge, Optimus was infuriated that one of his own Autobots could commit such a heinous act. Optimus was tasked to hunt down and deactivate Sideswipe, though the task proved to be easy as Sideswipe did not run, hide or resist. After Optimus had deactivated Sideswipe, he was approached by Prowl, who pointed out that Sideswipe's actions made little sense, as he had committed the crime in broad daylight before many witnesses. Agreeing that the Decepticons might be behind the situation, Optimus allowed Prowl to take a team of Autobots to Carob Island to clear Sideswipe's name while Optimus and Jazz stayed behind to continue working on human/Autobot relations. Prowl returned with evidence that it was indeed a Decepticon-controlled clone of Sideswipe that had committed the crime. Optimus then presumably reactivated Sideswipe when his name was cleared. Deadly Paradise