a couple of weeks ago tf5 trailer came out with a lot of interesting scenes...one of them is a shot of Optimus killing (?) bumblebee...you can also see that Optimus optics color have changed from blue to purple... The fans have came out with multiple theories So here's my theory... theory : remember in the ORIGINAL movie when megatron was floating in space after being abandon by the decipticon and then unicron show up and re-build him into galvatron (also resurrect thundercracker-skywarp-bombshell-kickback and sharpenal into cyclonus-scourge-and the sweeps!) ? I have a strong feeling that the same thing will happen in the last knight..unicron finds Optimus and resurrect him to nemesis prime...that explain the weird looking planet and why Optimus attack bee (also the purple optics) So what's do you think ? Will Optimus prime become evil ? And will we see nemesis prime (finally) making an appearance ? Leave your thought in the comments below!