A groan of disappointment could be heard emanating from every Transformers fan when it was announced that Marvel star Chris Hemsworth would take over the role of Optimus Prime from franchise icon Peter Cullen. But, while many have had doubts about the Thor actors ability to bring the same gravitas to the Autobots leader, Transformers One producer Lorenzo di Bonaventura has now explained to GamesRadar+ why the change was necessary for the prequel.
