Breakdown starts a little — Megatron literally dropping out of the sky was not the appearance he'd expected — but he recovers fast. Looks like he's probably going to have to bring the matter of the missing partner to Megatron after all, if he's asked for an explanation for this whole situation.

"Lord Megatron," he says respectfully, meant as a greeting, but a little pointedly for Sollux's sake. It's in English, but he figures the troll must at least know that much of the language. He'd better, because there won't be much Breakdown can do to help him if he decides it's a good idea to piss off Megatron. "Knock Out is... uh, missing, and this is the Alternian that can help me find him."

See? Situation totally handled. No need for Megatron involvement, right?