Transformers Antagonists

G1: The original Megatron. Turns into a portable gun.
G2: Original Megatron with a sensible alt-mode and insensible color-scheme.
Marvel: Rotating cast of bad-guys.
Headmasters: A scorpion’s head.
Masterforce: The Black Repaint of that scorpion.
Victory: The Dinosaur of Death who’s also a Kaiju. His boobs are alive.
Zone: Cancellation.
Kiss Players: The evils within the hearts of humanity. Also Ecchi.
Beast Wars: Dinosaur Megatron who says “Yes” a lot.
Beast Machines: Dragon Megatron who doesn’t say “Yes” enough.
Beast Wars II: Galvatron? Unicron?
Beast Wars Neo: “Magma”tron.
RID: The Megatron who turned into a giant hand.
Armada: Antler Megatron.
Energon: Boredom.
Cybertron: The most powerful incarnation of Megatron.
Dreamwave: Shitty business practices.
Animated: Helicopter Megatron.
War for Cybertron: D-16.
Fall of Cybertron: The smear on Metroplex’s fist.
Rise of the Dark Spark: Disappointment.
Shattered Glass: Evil Optimus Prime and Rodimus’s evil Spock Goatee.
Prime: OG Megatron returns.
Alternity: Quality Control.
RID-2015: Furry Bait.
Bayverse: If there was a giant Transformers-sized motorcycle for the Transformers to ride in this universe then Megatron would consistently ride bitch to all the other villains.
Combiner Wars: Needed more Megatron
IDW: The complex multifaceted issues in a society. Also Shockwave, he did most of this shit.