Optimus Prime is not only the most heroic of the Autobots, he is also the most popular character in the Transformers franchise. This Father's Day, let your dad know that he is a hero just like Prime with this 80sTees.com exclusive Optimus Prime Father's Day Transformers t-shirt. This shirt features an image of Optimus Prime in his robot mode holding his trademark ion blaster. The shirt reads Dad You Are A Hero Like Optimus.