Maybe he was repaired by the doctor after he'd finished with Megs, makes perfect sense and no one could argue against it really.
It's just a bot with the same alt mode, similar to Blackout/Grindor. I wanna see a Voyager toy for him, for sure.
Well, Frenzy survived getting his head cut off; if BC has his spark chamber in his chest like many of the other large TFs, then he could very well have survived decapitation. Anyways, I'm hoping he gets a Voyager figure... not holding my breath, but it would be nice.