Optimus Prime is the primary character in the Transformers: Rise of the Beasts film. Optimus Prime is the central character of the Transformers series and the leader of the Autobots. He is renowned for his tenacious defense of Earth against the Decepticons, bravery, and great leadership. In Rise of the Beasts, Optimus Prime is crucial to the plot as the Autobots encounter new difficulties and dangers.