Optimus Prime, also known in Japan as Convoy, is a fictional character and the protagonist of the Transformers franchise. Generally depicted as a brave and noble leader, Optimus Prime is the supreme commander of the Autobots in their fight against the Decepticons. The Transformers characters were developed for the American market after Hasbro representatives visited the 1983 Tokyo Toy Show. The characters were modified and the coloring was changed; notably, Optimus Prime was colored red, chrome, and dark blue.
https://en.wikipedia.org/wiki/Optimus_Prime