First aid is the upgraded Ratchet, and the medical officer of the Autobots. He transforms into an unamed Helicopter.
Returning to the Autobots in december, Ratchet, now known as First Aid, became the medical Officer again.
He helped on the battlefield in every battle, and managed to lure Magmatron into a trap. He was almost destroyed by Gravity Prime, but escaped when Neon saved him. He also attended the Autobot Defence team on Cybertron, and met the strongest Autobot ever, Omega Supreme