Not long after his resurrection, Optimus was alerted by Monitorus to an attack on Tau-Ursa. Optimus's impending speech was interrupted by a Decepticon attack led by Sixshot. Prime soon discovered that the attack was a diversion, while Galvatron tried out his Nullification Cannon on Cybertron's Energon supplies. Optimus rushed to the Energon plant, but, after clouting Slugslinger so hard that the Decepticon was left dangling over a precipice, Prime's morals forced him to rescue the Decepticon instead of stopping Galvatron from getting away.
He comes with a shield with a fold-out handle, allowing Optimus to hold onto it with either hand in robot mode. It has a simple transformation gimmick for vehicle mode which is activated by pressing a button at the top of the shield, causing the sides to spring outwards. In vehicle mode, the shield can be laid flat across the bed of the truck, attaching via a post on the back onto the truck’s trailer hitch. Alternatively, the bumpers on the shield can be rotated outwards, and the front can be bent down in order to form a new front end and hood for "battle vehicle mode", resembling the Stealth Force vehicle modes seen in Dark of the Moon.
Billed on his packaging as "BIGGEST Optimus Prime Toy!", Ultimate Optimus Prime consists of an articulated tractor-trailer. The cab can transform into a "normal" Optimus Prime on its own, roughly equivalent to a Voyager in size and complexity, though with a lower degree of screen-accuracy than most large Optimus toys. Prime has 5mm fist holes, as well as additional 5mm ports on his front wheel wells and both sets of external fuel tanks. Four of these remain available in robot mode. The trailer has twelve more 5mm ports. Despite this, the toy comes with no weapons scaled such that the cab-only robot can usefully wield them.

Optimus suffers from a design flaw that many other Voyager Class figures in the Combiner Wars line experience: the detents, or "click points", on the heavily-ratcheted outward motion of his hips (which also form the hips of his torso mode) are few in number and very far apart. As a result, Prime's legs have great difficulty assuming the natural "A-stance" formation that the angled design of his foot sculpt seems to have been meant to accommodate. Likewise, when forming the torso of Ultra Prime, the interactions of the knee-lock mechanism and the hip detents almost always force Ultra Prime's legs into either an awkwardly knock-kneed arrangement or an equally awkward, and often unstable, bow-legged posture (as seen in the image to the right) that prevents Ultra Prime from standing flat-footed. Unlike Motormaster, this version of Optimus was the only one to not receive the improved hip ratchets implemented in its future releases in some shape or form by Hasbro, though they would be used for the Battle Core redeco later in the line. However, there are third party ratchet replacements for the hips.
But in between those two most well-known alternate modes, Bumblebee has had at least six others. For the Transformers: Alternity Japanese toy line, he was a yellow Suzuki Swift Sport, which at least is still a small, quirky car. Ditto the AMC Pacer, the form he took when he travelled back in time to the ‘70s in a G.I. Joe vs. The Transformers crossover comic. Somewhat similarly, he’s a Supermini police car in the Transformers Animated series. But then he’s also been a couple of other muscle cars: as the Timelines Deluxe Goldbug toy, he’s a Chrysler ME 412 concept car, and in the Transformers: Prime animated series he can take the form of the fictional Urbana 500 muscle car. Bumblebee also has a number of different Cybertronian vehicle modes.

Standing only two-and-a-quarter inches tall, Smallest Transforming Transformers Optimus Prime was the smallest fully transforming G1 Optimus toy for a while, at least until the release of his chubby super-deformed Q-Transformers versions. He features an accurate transformation sequence based on the original full-sized toy, replacing the detachable hands with actual sculpted fists, and even including a tiny version of his laser rifle. Unsurprisingly, he also has little articulation and is only capable of moving his arms and legs.
He is designed with a removable head, biceps, arms, and legs, all of which use the same clip-peg/hole joint. This means his pieces can be swapped around in any order, as well as swapped with any other Hero Mashers figure... which includes figures from Marvel Comics, Star Wars, and Jurassic World, meaning you can make some pretty freaky combinations.

Originally, Optimus Prime was created as the leader of the Autobots, though it is unknown how he was created or his origins. In a possible future, Megatron was threatened by the existence of the Aerialbots and had Shockwave build a time machine to send them back in time to get rid of them. However, he only ended up changing history for the better. In the revised timeline, Optimus Prime began his life as a robot named Orion Pax, a mostly defenseless dock worker during the Golden Age of Cybertron nine million years ago, with a girlfriend named Ariel and a best friend named Dion. During this time, a new breed of robot with new flight capabilities appeared on the planet that Orion idolized. When Megatron, the leader of the new group of robots, approached him with inquiries about using one of the dock warehouses, Orion was swayed by Megatron. Both Orion and Ariel were severely wounded when Megatron and his forces attacked in order to claim the energy stored there. Searching for someone to help them, the time-displaced Aerialbots took Orion and Ariel to the ancient Autobot, Alpha Trion, who used them as the first subjects for the new reconstruction process he had developed involving rebuilding the frail Autobot frames into more battle-hardy configurations.

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