There is also the release of Optimus Prime as a deluxe sized brown gorilla which is a repaint of the Beast Wars 10th anniversary Optimus Primal toy most likely trying to tie Optimus Prime in some way to the jungle planet Animatros in the Cybertron series. According to his bio, Optimus Prime was temporarily mutated into this form by the Animatros Cyber Planet Key. The colors of this toy are a homage to Transformers: Universe Optimus Primal.
Though Prime's ultimate fate is unknown, in a story entitled "The Last Days of Optimus Prime", also from Transforce, Prime laments the new Transformers age without war and passes on to a Transformers afterlife, referred to as "J'nwan". The story is vague, however, and may be a metaphor for Prime rejoining the Matrix, as his time had come. In this realm, he was approached by the Predacon Sandstorm, who tried to plead for the help of Prime and the other legendary Transformers in dealing with a Unicron/Predacon hybrid named Shokaract. Prime refused, but later led a group of Transformers, including Megatron, Grimlock, and Soundwave), to distract the creature while Primus dealt the final blow.
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.