 The movie kills off many of the original characters: Optimus Prime,  Ironhide, Ratchet, Prowl, Brawn, Wheeljack, Windcharger, Megatron,  Starscream, Skywarp, Thundercracker, Shrapnel, Kickback and  Bombshell are all casualties, and it is learned in the third season  that Huffer also died at some point off