"A washout from the Cybertron Elite Guard, Optimus Prime was reassigned to space bridge repair duty under the supervision of Ratchet. He is a relatively naive and idealistic young leader, prone to long-winded "inspirational" speeches who leads a small and inexperienced Autobot space bridge maintenance team. Recently, his crew has landed on Earth, adopted jobs as semi-official superheroes and currently live in an abandoned Sumdac Systems warehouse."

While it's all up to interpretation, a good starting point would of course be an Optimus Prime impersonation. It doesn't even need to be a TFA Prime impersonation. All impersonations are welcome. Even a Jake Foushee impersonation (which I guess would be an impersonation of an impersonation).