No, but-- it's... ah, during the war, the Decepticons had these really big bad guys. Like... five of them, I think? They were known as Phase Sixers. They were the guys they'd send down to planets to completely obliterate them. Those guys show up on the battlefield and no-one makes it back, no matter how outnumbered they are.

[riptide's accidentally talking them up-- the phase sixers were unimaginably powerful but they didn't quite destroy planets. he's just going off rumours and from having seen the results of one of their work.]

Pipes died to the hands of one of them. Got crushed like he was nothing. I doubt Overlord even noticed he'd killed him.