Hot Rod then fought in the battle of Autobot City and saved the city for if he had not attacked Megatron, he would have destroyed it. Due to his attempted intervention in the epic battle between the Autobot leader, Optimus Prime and the Decepticon leader, Megatron, Prime was lethally injured. Before he died, the Matrix got passed on to the Autobot Ultra Magnus, whom he referred to as "old friend", despite protestations.
When you’re a Cybertronian robot-alien who could easily blow any human to bits if you wanted, having a license plate can’t be that important. Really, if you’re in car mode and a cop pulls you over for not having plates, and sees that you also don’t have a driver, and then perhaps sees you turn into a giant robot, what exactly is that cop going to do?
In a break from tradition, Energon Optimus Prime's large mode resembled a configuration similar to Voltron or to the Super Sentai action figures. This design was unpopular with many fans due to design issues with the toy. The small robot's body was large in proportion to his arms and legs which made the figure appear fat, earning it the nickname "Fatimus Prime" or "Obese-imus Prime". The 4 vehicles that combined with the robot were small, lacking the intricate detail that made other toys in the line popular. Fans were also angered by early releases of this toy in which the head was molded with a mouth rather than the traditional face plate design. Later releases of the toy eliminated the visible mouth feature.
The term Generation 1 is a retronym; the series was simply known as "Transformers" until the release of the Generation 2 series. However, the term has become semi-official, as both Hasbro and Takara have referred to this era as "Generation 1". New characters are still occasionally added to the line, primarily by E-hobby. (Examples: Sunstorm, Hauler, Detritus, and the like.) Large-scale production of new characters in this line ended with the onset of Generation 2. Transformers fans often are very upheld with the G1 community. This has led to controversy among fans who consider G1 to be the only "pure" form of Transformers.
This gold vacuum metallized (save for his black joints, which they were made out of unpaintable plastic) Protoform Optimus Prime figure was featured as a Lucky Draw giveaway (along side similarly gold vac-metal versions of Voyager class Optimus Prime and Protoform Starscream) in the December 2007 issue of TV Magazine. Released in 2008, only 5 pieces were made, making it one of the rarest Lucky Draw figures; the images at right represent the only known photographs of it.