In the Generation 1 Transformers cartoon, Optimus Prime was once known as Orion Pax. He, along with his girlfriend Ariel and friend Dion, were attacked by Megatron and his new horde of Decepticons.

Not that “Transformers One” is concerned with any of this. Instead of getting lost in the lore, it offers a fresh approach, following a young Optimus Prime, here known as Orion Pax (voiced by ...