The origins of Optimus Prime and Megatron are laid out in Transformers One, a new animated prequel adventure from Josh Cooley, the director of Toy Story 4.

Chris Hemsworth, Brian Tyree Henry, Scarlett Johansson and Jon Hamm headline an all-star voice cast in a film that reinvigorates a franchise that had languished for too long under the questionable stewardship of Michael Bay.

While Bay and Steven Spielberg remain listed as producers, Transformers One could not be further removed from the chaotic live-action spectacles that fetishised fast cars and scantily clad babes over the adventures of feuding alien robots.

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