Quote Originally Posted by jazzcomp View Post
Ultimate Movie Prime or Jetwing Optimus?
Unicron Generations xxth anniversary?
Quote Originally Posted by Sinnertwin View Post
Off the top of my head
Unicron, Supreme Class Starscream, Energon Omega, Primus
BM Supreme Cheetor also gets a mention for being one of the tallest
I guess it depends on how you measure "big". Primus is certainly taller than the 2 Primes you mentioned, and bulkier, but the Primes, especially Ultimate, have massive wingspans.