- Motto: "Continue building from within,attack your designated target,defend everyone."
- Weapon: Double-Barreled, Armor-Piercing Particle Beam Cann...
Ratchet's been a member of the A/bot cause since the beginning, fighting with the motivation that Cybertron will be restored to Autobot sentiments eventually. This belief would have been challenged many times before TFP.
He's now basically lost his reason to carry on; Been stripped of the reason that he joined the war effort.
Joining the Decepticons (willingly) at the moment wouldn't fit his persona: There is no capability to restore Cybertron with them, so no motivation for Ratchet to join. Even if the Deceps had the tools to restore Cybertron, there would still be the Autobot option to steal them away from the Decepticons.
His character has been increasingly impatient lately and this may grate now that they are all fugitives, if not with the other A/bots then with the Humans themselves. Optimus did spend his last moments with Ratchet ordering Ratchet to save himself and Wheeljack (who crash landed in convenient vicinity of Primes' remains) did give a gesture of true friendship to Ratchet in that final battle, so things are set up to let Ratchet soul search and then neatly come back home. We'll see what happens.
"Everyone has a hobby.Even people who say they don't still have one under another name.If we're sick,injured, we still go to it and get down to see how it is.If it needs something, we bring it,make sure the attention is perfect.It exercises our care and protection and gives us back philosophies.It's a living thing to us,and is the most perfect way to teach a young person how to be towards a living thing. It's something that should never be taken away."