Editing Megatron (section)

===Animated series===
After the events of the ''Revenge of the Fallen'' film, Megatron goes into hiding, orchestrating the events from [[Soundwave (Transformers)#Transformers: Revenge of The Fallen|Soundwave]] getting into NEST headquarters to [[Lockdown (Transformers)#Transformers: Revenge of the Fallen|Lockdown]] being pursued by Ratchet. Megatron finally reveals himself in ''Cyber Missions 4'', when Optimus and [[Sideswipe (Transformers)|Sideswipe]] track his spark's signal, which leads them to an abandoned warehouse. The two realize that Megatron is always one step ahead of them, and Megatron slashes at Sideswipe from behind. Megatron starts dueling Optimus, then Sideswipe joins in with him. Realizing that he is outnumbered, Megatron transforms into tank mode and shoots the roof, which collapses on Optimus and Sideswipe. Megatron gets away but leaves a trail of tank tread marks that lead out of the warehouse.

Megatron returns 8 episodes later in ''Cyber Missions #12'', where he and Starscream scheme in the Arctic. He reveals to Starscream that he is aware of his ambitions and will punish him if he ever shows it again. Optimus Prime, who tracked them, soon arrives and combats them. When the rest of Optimus's team arrives, Megatron orders Starscream to take care of them, which Starscream agrees to, but not without complaint. Megatron and Starscream are simultaneously defeated, and the Decepticon commander flees after Optimus grants him mercy.

Most of the Decepticons return for the final mission, ''Decepticons Attack.'' After receiving a signal from Soundwave emitting from a bullet train, Megatron arrived on the other side of the tunnel the train was emerging from and derailed it. Ripping open one of the cars, Megatron berated Soundwave for being captured so easily, until it was revealed it was simply a hologram of his communications officer. Megatron declared it a trap, to which Optimus replied that it was a moment later. The Autobots and Decepticons battled for one last time, with Optimus telling Megatron that his alliances were made out of fear, not friendship. The Decepticons are then cornered by the human troops. Optimus Prime then demands that all Decepticons leave Earth. All of the Decepticons, including Megatron, leave Earth, but not before the commander declares that he ''will'' return.