Megatron (Michael Bay pentalogy)

Megatron is the main antagonist of the Michael Bay Pentalogy of Transformers, since Transformers 2: Revenge of the Fallen, he was simply just an antagonist as The Fallen for Transformers 2: Revenge of the Fallen, Sentinel Prime for Transformers 3: Dark of the Moon, Lockdown for Transformers 4: Age of Extinction, and Quintessa for Transformers 5: The Last Knight took the role of main antagonist in their respective films.

Autobot Qualities (In A Bad Way)

 * 1) Megatron's personality consists of being nothing other than an evil, brutal, psychotic, homicidal killing machine.
 * 2) In Transformers 2: Revenge of the Fallen, he and Scalpel tortured Sam Witwicky by attempting to remove his brain for "science".
 * 3) When he became "Galvatron" in Transformers 4: Age of Extinction, he used Transformium just to "transform" from one mode to another.
 * 4) Speaking of his new name "Galvatron", he doesn't stay faithful to that name. In Transformers 5: The Last Knight, he became "Megatron" again.
 * 5) Back to Transformers 2: Revenge of the Fallen, he barely uses his tank mode (which was made for the sole purpose of merchandise).
 * 6) His design looks quite ugly for a Decepticon.
 * 7) He died multiple times and was brought back after nearly every death. This can appear excessive and a poor attempt at keeping Megatron a reoccurring villain.
 * 8) Starting from Transformers 2: Revenge of the Fallen, he wasn't given much of a good spotlight and he was treated as mostly a punching bag in the fight scenes.
 * 9) * However, in Age of Extinction, he does put up a good against Optimus Prime in a short fight scene.

Decepticon Qualities (In A Good Way)

 * 1) He was not as bad in Transformers (2007).
 * 2) His design might be ugly, but it had a lot of effort.
 * 3) * In addition, he's the only Transformers character in the film series whose design changes in every movie which is interesting.
 * 4) Kids may still love him as a villain.
 * 5) He does a fair amount of cool stuff in the movies, particularly in the fight scenes.
 * 6) He does say some cool stuff such as:
 * 7) Transformers (2007)
 * 8) * I AM MEGATRON.
 * 9) * YOU'VE FAILED ME YET AGAIN STARSCREAM. GET THEM!
 * 10) Transformers 2: Revenge of the Fallen (2009)
 * 11) * EVEN IN DEATH, THERE IS NO COMMAND BUT MINE.
 * 12) * I'M GOING TO KILL YOU, SLOWLY, PAINFULLY, BUT FIRST, WE HAVE SOME DELICATE WORK TO DO.
 * 13) Transformers 3: Dark of the Moon (2011)
 * 14) * ALL HAIL MEGATRON.
 * 15) * THIS IS MY PLANET!
 * 16) Transformers 4: Age of Extinction (2014)
 * 17) * THAT IS WHY I HAVE NO FEAR! YOU DIE!!
 * 18) * WE SHALL MEET AGAIN PRIME, FOR I AM REBORN.
 * 19) Transformers 5: The Last Knight (2017)
 * 20) * THE END IS NEAR MY OLD TREACHEROUS FRIEND. WHAT A SHAME YOU'LL BE UNABLE TO SEE IT.
 * 21) * WE WERE BROTHERS ONCE!
 * 22) Hugo Weaving and Frank Welker did a great job voicing him.
 * 23) The scene where he orchestrated an attempt to remove the brain of Sam from his skull, mentioned in BQ #2, can be considered cool or appropriately intense since it's disturbing and different.
 * 24) The toy versions of him are nice.

Trivia

 * In Transformers (2007), he was originally going to be a tank with a G1-esque appearance. The tank actually apears in Megatron's design in Angry birds Transformers.