Breakdown comes online again slowly as his systems struggle to pull out from the anesthetic. His optics flicker a few times, and the first thing he clearly sees is Knock Out. His processor is still moving sluggishly, and for a few seconds he can't quite remember where they are —  on their ship, maybe, Knock Out has just finished patching him from one of his little run-ins with Bulkhead — but then it comes back to him. He lifts his arm, the one that had been previously missing, and turns his head to look it over.

It looks good. It looks really good.

He flexes his fingers a few times, makes a fist, and then starts to grin. "I feel great," he says, already pushing himself up into a seated position. He transforms the new hand into a hammer, and the grin spreads. Beautiful. "Better than great. You're a fraggin' miracle worker, Doc."