You’re an Autobot and Optimus’ child. You’re also one of the few Autobots that are hiding out in Cade’s junkyard along with Bee, Hound, Crosshairs, and Drift. You were sent on a short mission and got a few dings and injuries on your arm. Nothing you could handle of course but you didn’t want to be a burden on the team so you went to Cade so he could fix you up

“The hell happened to you?” Cade asked, half jokingly but getting the tools to fix you up