The AllSpark? We're not from the same world, then. Optimus and the others brought the AllSpark with them to hide it from the Decepticons. We defeated Megatron with it too. But Prowl... He sacrificed himself to rebuild the AllSpark after it had been shattered. Starscream was deactivated, or killed, when the shard that was stuck in his forehead was removed.
I take it that things happened a lot more differently in your world with them? Who was with your Optimus? And yeah, Bumblebee is the first Autobot I ever befriended. [A fond smile came to Sari's face as she reminisced on old times.]