Editing Mechagodzilla (section)

===Shōwa period (1974–1975)===
[[File:Mechagodzilla 1974.png|thumb|Shōwa Mechagodzilla]]
In ''[[Godzilla vs. Mechagodzilla]]'', Mechagodzilla is created by the Black Hole Planet 3 aliens, also known as the Simians, in order to conquer Earth before their homeworld gets destroyed by an expanding [[black hole]]. First appearing in a pseudo-flesh outer covering and masquerading as the real Godzilla, Mechagodzilla attacks Japan and overpowers Godzilla's ally [[Anguirus]]. Godzilla appears and destroys the pseudo-flesh disguise, forcing Mechagodzilla to reveal itself in full. Their initial battle results in a tie, as Godzilla is severely wounded and Mechagodzilla is forced back into the Simian's base for repair. Mechagodzilla is deployed again but is overpowered through the combined efforts of Godzilla and [[King Caesar]]. Godzilla ultimately defeats Mechagodzilla by decapitating it, and Mechagodzilla subsequently explodes upon the self-destruction of the Simians' base.

The Simians, now under the leadership of Mugal, return and rebuild Mechagodzilla in ''[[Terror of Mechagodzilla]]''. This time, it is further modified with living human brain cells and has its control circuitry integrated into the body of the formerly human [[cyborg]] Katsura Mafune. Mechagodzilla is teamed up with the dinosaur [[Titanosaurus (Godzilla)|Titanosaurus]], who is controlled by Katsura's crazed father. Although Mechagodzilla survives another decapitation during a battle against Godzilla, it is once more defeated after Katsura commits suicide, destroying the robot's controls and freezing it long enough for Godzilla to use its atomic heat ray on Mechagodzilla's headless body, causing it to explode.