If the Autobots went along with Prowl’s strategy, the resulting heat from the explosion caused the Autobots’ circuits to overheat, rendering them unconscious. Upon reawakening, the Autobots found themselves captives of Megatron, who informed them that their fellow Autobots would soon perish, and that the humans would be conquered by the Decepticons shortly after.
The bio for the Botcon 2015 version of Megatron reveals that he comes from an alternate reality where Megatron achieved victory during events similar to Dark of the Moon and killed both Optimus and Sentinel Prime. However, Rodimus Prime then arose to challenge him, facing him in a battle that Megatron ultimately chose to flee, resulting in him ending up in the Axiom Nexus.
This mold was redecoed in 2000 as Car Robots Black Convoy, and slightly retooled as his US incarnation "Scourge". After Scourge, the next use of this mold was planned to be Toxitron, which ended up being canceled. The slightly retooled version of this mold was released in 2006 in Japan as reissue Battle Convoy, which was the name of this toy during the Japanese Generation 2. The reissue used the Robots in Disguise modified tooling, with a slightly modified deco using silver vacuum-metalized plastic on his chest and trailer sides along with additional paint applications and G2 symbols. The mold was also redecoed to create a new Generation 2 version of Ultra Magnus as an E-Hobby exclusive (unusual in that the character was killed in the course of Japan's Generation One fiction).
Part of the fifth wave of Kabaya's revival of the Transformers Gum series, this snap-on transforming model kit of War for Cybertron Optimus Prime is sculpted from red, light blue, and gray plastics, and uses stickers for detail. He comes with a blue non-transforming version of his hand-held blaster rifle, which mounts at the rear in vehicle mode. He comes packed with a model kit of Tigerbreast, and a stick of gum.
Both Optimus Prime and Bumblebee raced down a street in an unknown desert while having an argument about Energon. He ordered Bumblebee to scan the surroundings to find the location where the Decepticons were hiding, and to be careful for possible scouts. When Bumblebee noted what the Decepticons were doing, Prime speculated that they might be planning to convert the energy into Energon, and ordered Bumblebee to create a diversion. While Bumblebee and Cyclonus fought, Prime made a surprise attack and took out Cyclonus with his Ion-axe, before turning his attention to Megatron. When both Decepticons fled, Prime told Bumblebee they'd done a good job (in front of a burning Gas station), and both Autobots got back on the move. Fight for Energon
This version of Optimus is a redeco of the original Legion Class Optimus Prime toy, featuring additional paint details. He features an Autobot insignia on his faux chest. His head was not entirely clipped down in his stock photos. The stock photos shows him having darker plastics & silver paint as opposed to the final product. This seems to have been a trick of the lighting, as the released toy remained its standard plastic colors & silver paint apps.
Toymaker Fischer Price was the knight in shining armor on this one with the creation of their Power Wheels line. At first, Power Wheels vehicles were very basic with small electric motors and rudimentary Jeep-like styling. Now, Fischer Price has unleashed a car that says "When I grow up, I want to be too rich to care about the environment." This giant bastard comes with tinted windows, a set of dubs and even a fully functional FM transmitter which, no doubt, blasts shitty radio static through its real-live rear subwoofers.
In the Autobot Campaign, Optimus Prime provides intelligence and missions to Bumblebee in his search for the Allspark. Eventually, the clues lead the Autobot to Sam Witwicky. After saving Sam from Barricade, Bumblebee finally completes preparations for the Autobots to arrive on Earth. Once on Earth and having informed the two teenagers of their mission, Prime and the Autobots are discovered by Sector 7. Optimus sends Jazz on a high-speed destruction distraction mission, then sends Ironhide to rescue Jazz from a double-threat posed by the government agents and various Decepticon scouts. When Bumblebee is captured, Prime transforms and chases the chopper which from which the small Autobot is tied. After a lengthy chase, Prime manages to catch the net, only to be thrown off by another Cybertronian meteor. As Bumblebee is carried away, Optimus promises he will not fail him again. Jazz informs him that the meteor is not an Autobot. Prime confronts the new threat, who turns out to be the Decepticon Triple Changer Shockwave. The two battle it out across Tranquility before Optimus finally destroys him. During the battle, Optimus overhears Starscream's transmission revealing the location of the Allspark. Optimus then returns to an intel role as he guides Bumblebee in his mission to retrieve the Allspark from Hoover Dam. Unfortunately, the Decepticons manage to free Megatron, leading to the final battle in Mission City. As the Autobots battle it out with the Decepticons to protect Sam and the Allspark, things seem to take a turn for the worse as Megatron finally arrives. Before he can claim the Allspark, Optimus attacks him. Optimus defeats Megatron and leaves him on the ground, seemingly devoid of life. However, just as Sam is giving the Allspark to Optimus, Megatron awakens, leaping at Optimus with his chain-flail out, making one last attempt at defeating his adversary. Optimus grabs the chain, pulling Megatron in closer, and, with the Allspark clutched in his fist, delivers a punch through Megatron's spark, killing him. Optimus reflects on the losses and rewards of this battle, as the Autobots have a new home, but many were killed in the battle. The story ends with Optimus and the Autobots choosing to remain in Earth, proclaiming it as their new home.
In Transformers: The Last Knight, he is brother-in-arms with Bumblebee who he fought alongside with to foil the Nazi Party in World War 2. He speaks with a thick French accent due to being stuck in France for so long, much to his own embarrassment. He wields a special gun which can briefly slow down time. He is also the only Transformer who is shown to speak in vehicle mode. 
The figure also features a hollow trailer (which also serves as his legs), fit for the Warrior Class-sized toys. The trailer can also be converted into a battle station. Because of the toy's design & transformation, he is kinda show-accurate. Optimus also features 5mm-compatible ports on his trailer, arms, shoulders, legs, knees, waist armor, and the pop-out Decepticon Hunters. He also includes many weapons, including his axe with a short handle. The included weapons can also be combined with the Decepticon Hunters into a dual-bladed weapon. All of his included weapons can be wield by any Warrior Class figures, although the accessories are associated with Bumblebee, Grimlock, Sideswipe, Strongarm, Jazz, & Drift.
Part of the first wave of Bot Shots Series 1 launchers, this repaint of Optimus Prime comes with a large trailer that pops open to form a battle station with a spring-loaded launching platform. He appears to have the same plastic colors as the single release, and the same set of paint operations, but his paint is done in different shades, having glossy dark blue paint and glossy bright red paint. The black part of his launcher is sculpted to look vaguely like the repair done that is part of Generation 1 Optimus Prime's repair bay.
It may be that the price of an individual brick has gone down over time, but what does it matter if the size of the bricks has decreased overtime? Sure, the average number of pieces in a set has increased, but how many of those pieces are tiny details? To answer this question, I compiled all the weight data on brickset.com and compared the sets by their price per gram in a similar fashion to how I compared them by price of piece. Below is the chart of my results (prices are in US dollars).
Softimus Prime is, as his name suggests, a plush G1 Optimus Prime toy. Obviously, he has no problems with articulation and passes the drop test with flying colors. His main draw is the ability to "transform" into his Freightliner FL86 vehicle mode by turning the plush toy inside out, his transformation roughly similar to the Powermaster cab Prime's. He is love, in bed.
Universe Optimus Prime is a redeco of the Robots in Disguise Scourge Spy Changer toy. He replaces most of the black plastic with predominantly red and blue, with silver for detailing, with an overall deco making him resemble the original Optimus Prime. Like most Spychangers, he features high speed axles and can roll very well across smooth surfaces, but lacks the weight to propel him quickly.
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.