okay in episode 24 it told us all about the classic story of primus'es creation of the thirteen primes to defeat unicron (which they succeeded) it also said that primus became cybertron. it didn't exactly say that unicron became earth (he's much larger than earth) so what if some dark energon escaped his body (primus stabbed his arm or something) then the dark energon solidified and rock formed around it to become earth. and the reason why he had those "avatars" is because unicron can still conect with dark energon even if it's outside his body. it would explain the global disasters, megatron seeing a silhouette of unicron's face and how optimus fought a mini unicron made of rock (right?) any one else think so or would like to contribute?