I think it's 'bout time these finally get revealed. Behold, Optimus Prime's trailer! It stores 5 attack drones inside of it; Roadster-1, Digger-2, Submarine-3, Copter-4, & Jet-5. Together, they're known as the "Prime Force"! Plus, they even help the boss bot in an awesome way! And what exactly is it? Find out in the next pic!