Re: [What If] Dr Destroyer really did die. What now?
I like the idea of Sennacherib, perhaps Destroyer was dead long ago, and the Destroyerbots heroes encountered weren't just decoys, they were the shells that Sennacherib used to interact with the world, while keeping the consciousness of Destroyer truly immortal, backed up, and replicated.
Alternatively, maybe the attack by Mechanon on Sennacherib actually worked in reverse, with the intellect of Mechanon battling with the uploaded intellect of Dr. Destroyer -- and losing. Destroyer worked his way backwards into Mechanon, taking over and spreading.