Trailer (トレーラー Torērā) was often sleepy, but was the strongest of the BeCools. He could carry stuff in his trailer. The Self-Introduction Chapter When Trailer came across a traffic jam, he crashed into the BeCools holding him up, forcing them to transform into robot mode and realize they could just walk past the jam. The Story of the Surprising and Big Traffic Jam! When the same bunch of BeCools were stuck before a hole, Trailer selflessly used his body to act as a bridge for the other BeCools. Yellow Sports Car was so inspired by his heroism that he offered to fill the hole so that Trailer could pass through. Trailer did so and sped away, leaving Yellow Sports Car in the hole. The Story of Mister Trailer's Big Success!
Sold by Hasbro Toy Shop at various conventions, Pepsi Optimus Prime is a repackaging of a virtually unaltered 2005 Japanese Pepsi Convoy. (Again, his stacks are shortened for safety reasons.) However, this U.S. release is, officially, a different character. Whereas the Japanese release's bio explicitly identifies the product as a separate character from Convoy (created with help from NASA, no less), the U.S. bio conversely indicates that their version of the character most definitely is Optimus Prime. His motivation for schilling Pepsi is, apparently, that he wanted a new disguise but basically couldn't be arsed to actually reformat into a new altmode.
Hasbro's subsidiary Milton Bradley (MB) released the toy in Europe in late 1985, following a slight delay due to licensing issues; there are no less than three variants of MB-packaged Optimus Prime, one of them manufactured by Takara and sporting blue feet, the other two manufactured by Joustra as part of a deal with Hasbro/MB, one of them with blue and the other one with red feet;
As a 25th anniversary set, Prime includes several new pack-in bonuses: a reprint of the first issue of the original Marvel comic book, a DVD containing all three parts of the animated series pilot "More than Meets the Eye", and three desktop wallpapers, and a battery-powered Autobot symbol that plays transforming sound effects, part of the first version of the Transformers theme song, and three voice clips performed by Peter Cullen: "I am Optimus Prime!", "Autobot, transform and roll out!" and "Megatron must be stopped, no matter the cost." There are some reports that the Autobot symbol could be worn out or damaged during the time of purchase.
In robot mode, like Combat Hero Prime, the bottom of the truck became his familiar windowed chest based upon the original Optimus Prime toy. His main gimmick was light up LED headlights, and a lightpipe in the bottom of his right fist, illuminated by an LED in his right forearm, that would illuminate his clear sword or his double-barreled rifle if they were used in that hand. All three LEDs were activated simultaneously by pressing the sunroof-like depression on the roof of the truck.