Optimus Prime is the overarching protagonist of Entertainment One and Nickelodeon's Transformers: EarthSpark. He is the leader of the Autobots who keeps Bumblebee and the Terran siblings a secret. He helps hunt down rogue Decepticons and deep down, realizes the bond between Thrash, Twitch, Mo and Robby is a perfect representation of a human and Cybertronian alliance.
He is voiced by Alan Tudyk, who also portrayed Dutch in the live-action Transformers film series and George Darling in the 2023 adaptation of Peter Pan and Wendy, and voiced several Disney characters including Duke Weaselton, Iago, Alistair Krei, The Duke of Westleton, and several others.
This is also one of the few instances for Optimus, where he is not the main character