Optimus Prime in Transformers Design: A heavily armored, battle-worn appearance reflecting the final days of the war on Cybertron. Alternate mode: A futuristic armored Cybertronian truck rather than an Earth-style semi truck. Weaponry: Ion BlasterEnergon Axe Various heavy weapons Role in the story: Leads the Autobots during Cybertron's collapse and organizes the evacuation aboard the Ark.