"Nah, I'd know yer mug anywhere." Yeah, Bulkhead doesn't trust Knock Out as far as he can throw him. Then again that goes for any cons from his world except Dead End. He may have helped Rung, but that wasn't quite enough to get him on Bulkhead's trusted list yet.

"How's Rung?" Speaking of that Autobot. Knock Out was the one that doctored him on the field, he'd know best. He won't be talking to you any long than he has to.