Mekagojira no gyakushu (1975)

In the 15th and final film of the original series, Godzilla comes to the rescue when an alien race rebuilds Mechagodzilla to destroy Earth's cities. A traitorous scientist gives them a second weapon: Titanosaurus. Godzilla would be absent from the screen for 9 years following this film, and the series would be rebooted with 1984's much darker "Gojira".

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