Godzilla a Mechagodzilla ellen was released in the year 1974。Godzilla a Mechagodzilla ellen is also called as Gojira tai Mekagojira, Godzilla contra Cibergodzilla, máquina de destrucción, Godzilla contre Mecanik Monster, Godzilla contro i robot, Godzilla vs. Bionic Monster, Godzilla vs. Cosmic Monster, Godzilla vs. Mechagodzilla, Invasion från Applaneten。

Aliens intend to take over the planet and, just in case Godzilla tries to interfere, have built a mechanical version of him to put an end to his interference. The Earth humans summon the legendary King Seesar to assist Godzilla in the battle.