The first Unicron Trilogy Optimus Prime toy transforms into a longnose truck cab of made-up model. His clear-plastic smokestacks can detach and form a double-barrelled pistol that he can hold in robot mode, and a button on top of his head causes his mouthplate to jiggle up and down as if he were talking (the irony being that while this was a familiar trait of G1 cartoon Optimus Prime, in the Armada animated series, this Prime's mouthplate remained static when he talked). He can also hold a large cannon that is stored within his trailer, and his chest flips down to reveal a (non-removable) Matrix of Leadership. He is packaged with his Mini-Con partner Sparkplug.
In his first appearance in the series, Optimus looks similar to the original G1 Optimus Prime until he copies himself with a semi-truck and his design in robot mode changes to the image shown here. Soon after, he retrieves his Mini-Con partner, Sparkplug. The cab of his truck mode detaches to form Optimus himself, while the trailer transforms into a battle station mode operable by Optimus and several Mini-Cons. Optimus can also combine with his base to form a "Super Mode" robot that, when combined with Sparkplug, can fire a series of powerful lasers. Additionally, Optimus can combine with Jetfire and/or Overload in his Super Mode for additional power.[49]
Part of the first wave of Prime: Robots in Disguise Weaponizer Class toys, Optimus Prime is a large toy, similar in size to Leader Class figures from previous Transformers toylines. He features a simpler transformation and design compared to previous Leader-sized figures, with him having fake chest windows (again) and a simplified, hollow truck rear where his feet, arms, and fake chest windows are plainly visible. He comes with a blaster which can mount onto his hands, shoulder-pads, and the sides of his legs/truck rear.
The TakaraTomy "Autobot Alliance" release of this toy has some significant differences, including casting the red plastic in a darker shade, making his shin and wheel joints grey rather than Hasbro's bronze, painting the Matrix of Leadership silver, and swapping out the dual energon swords for battle hooks, similar to 2010's Leader class Optimus Prime. However, due to the Japanese release retaining the Hasbro packaging, the box still advertises the dual energon swords rather than the hooks. He retains the masked face used for the Hasbro release. 
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