As this is the Unicron Triogy we're talking about, it should come as no surprise that Prime can transform into a Super Mode by combining with his trailer, which becomes a massive winged backpack and a pair of large boots, generally evocative of God Ginrai. To complete his Super Mode look, a small lever of the back of Prime's head raises his traditional mouthplate into place, covering his Optimus Primal-style mouth slot, and two "crests" fold out from either side of his helmet. Hasbro's instructions and stock photography for the figure orient the wings so that the two cannons point over Prime's shoulders, but Takara's have wings arcing up past his shoulders, with the cannons slung under his arms. This was the way Prime appeared in the cartoon series, and was the way all subsequent Hasbro redecos of the toy were positioned. In Super Mode, Prime is a rather top-heavy robot, and his hip joints are not that tight, which makes standing him up a challenging prospect.
Another thing different now from when I was a kid (70s/80s) is that the sets contain much fewer basic bricks. It seems the models are made out of all these exotic specialized pieces which are less useful for general building. Is this a business strategy to sell more sets by reducing the reusability, a marketing ploy to sell more pieces by making every set include unique collectable parts, or just trying to make the models look more realistic/slick? I think Lego was more fun when the majority of bricks were basic.
The third version [18] would quite possibly have been the most gimmick loaded Transformer in the history of the line, simultaneously being a Powermaster, Headmaster, and Triple Changer. The Headmaster also would have been a Triple Changer, turning into a sort of armored four-wheeled rover (Roller II?) and robot as well as a rather silly looking Optimus Prime head with four vertically aligned wheels jutting off the sides. It seems that when the extra Headmaster gimmick was scrapped, the super mode head remained separate rather than being reintegrated into the trailer hitch such as on the earliest design. Notably, the body of this design is extremely close to the final design.

Commander class figures all come with translucent weaponry, and feature some amount of translucent plastic in their bodies (blue for Autobots, but a variety of colors for Decepticons), a feature designed around interacting with the line's vehicles (see below). Each vehicle is equipped with an "Energon Booster", a light-up accessory that can plug into the Commanders' weapons or into the posts and ports on the figures' backs to illuminate them with "glowing energon power".
In the United Kingdom, this Optimus Prime was released as an Argos exclusive along with several other sets branded as part of the Reveal the Shield subline imprint. His United States release was initially claimed to be exclusive to Target by online retailers from Asia, but even though the other Reveal the Shield products eventually became available at Target, Voyager Class Optimus Prime was released as a Toys"R"Us exclusive in the United States instead, complete with a "Toys"R"Us exclusive" sticker. Also, both his United States and Asian releases lack the "Reveal the Shield" logo the United Kingdom release has (but still feature the "Reveal hidden images" call-out).
The figure also comes with two gun accessories, the "Eliminator Gun" and "Assault Blaster", which combine into the "Mega Striker", a rifle that closely resembles the one used in Dark of the Moon. The separate guns also have a MechTech-style transformation, and pulling a lever transforms them into alternate crossbow-like shapes. In "battle vehicle mode", the sides of the truck are rotated up, and the guns can be attached by small pegs to holes in the modified smokestacks, or they can plugged into any of the standard connection points with their 5mm posts... except the ones on the hinge behind the cab, since those are supposed to be for his Energon battle blades.
An extensive redeco of the Protoform Optimus Prime mold that was exclusively available at the Japanese C3xHobby Convention in August of 2007, and later offered by e-HOBBY in limited quantities. Most of the body is made out of transparent turquoise plastic in order to mimic its frozen state in the "coldness" of space, while orange paint is used on the front end of the "entry" mode, mimicking the heat effects of sudden atmospheric entry. The flame attachment is made out of clear blue plastic, with the tail end being covered in gold paint.
Labeled as a "Triple Changer", Striker Optimus is a redeco and retool of Dark of the Moon Supreme Class Jetwing Optimus Prime, with new weapons. The base figure has most of the same mold changes as Jetwing Optimus Prime (see below), but has been altered further; in particular, the transforming smokestacks and fuel tanks/ion blaster parts have been replaced with retooled regular tanks that now function as mounts for the new accessories. The colors on the toy are darker than Jetwing Optimus, with a different flame deco that extends farther along the sides of the toy. Additionally, two new 5mm holes have been added to the gray hinge behind the cab in order to accommodate the Toys R Us Japan-exclusive battle blade accessories. The "I am Optimus Prime" saying of Buster Optimus Prime has also been replaced with the "We must stop the Decepticons!" saying of 2010 Transformers Optimus Prime, although batteries are not included.
This set is a ToysЯUs Japan exclusive, consisting of Powerlinx Optimus Prime (dubbed "Convoy Final Battle Coloration" and redecoed with more show-accurate colours, principally a silver mouthplate instead of red and varying color saturation from the Hasbro version), a "crystal" version of Overload ("Ultra Magnus Special Clear Version") made out of transluscent plastics, and an exclusive X-Dimension redeco of the Street Action Mini-Con Team. This set is entirely "new" content not available in the normal mass-retail Micron Legend line, and is also the last release of "X-Dimension" Mini-Cons. Rather than come with individual bio cards for the various characters, the set came with only a single card for Magna Convoy.

The TakaraTomy version of Premium Series Optimus Prime has a considerably different deco from Hasbro's release. Similar to the unique chrome Optimus Prime, Optimus Prime Battle Mode features vacuum-metallized parts for nearly all of the silver truck parts, for a greater resemblance to the polished chrome on the real prop trucks. Unfortunately, as his feet are the front fenders and grill, this will likely lead to chipping. In robot mode, he retains several decos that were removed from Hasbro's Premium Optimus Prime for cost reasons, such as the blue and gold decos on his thighs. Finally, the flip-out energy sword is coloured gold to reflect its "powered up" appearance.
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.
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