Optimus Bio

Valiant and heroic, Optimus Prime is known across the world is leader of the Autobots, throughout the Transformers franchise. He is often portrayed as a robot whose primary vehicle mode is that of a semi truck. He made his first on-screen appearance in 1984's animated series, Transformers, during the first episode entitled Transformers: More Than Meets the Eye: Part 1 (#1.1). Optimus Prime made his first ever live action appearance, in the 2007 film Transformers from director Michael Bay. Once again, Optimus Prime was depicted as a semi truck. But rather than the usual cab over design, which many fans had become accustomed to, Prime was now a conventional Peterbilt cab design truck. And unlike the animated series, a trailer did not suddenly appear behind him when he transformed into truck mode, and then disappear when he transformed back into robot mode.