It seems that, Highlander style, there can be only one. And this is possibly not the Prime Autobot you were expecting.

The very concept behind the Transformers franchise is that of "robots in disguise," hence their ability to transform. From vehicles to animals and electronic devices, the Cybertronian species is known ...

The Transformers franchise has several iconic and recognizable characters, with many of these robots in disguise synonymous with certain alternate modes. These include Optimus Prime's truck form, ...