King Kong Escapes is a 1968 production by Toho, the Japanese company responsible for such epics as Godzilla, Godzilla vs Mothra, King Kong vs Godzilla etc.
A ludicrous story highlighted by simply laughable special effects, this is what Amazon had to say about it (couldn't be bothered making up my own story):
It's King Kong to the rescue when a giant robot threatens to destroy Tokyo in the gripping King Kong Escapes! The action begins when the conniving Dr. Who builds a robot Kong in order to retrieve a highly radioactive element for his mysterious benefactor, Madame X. When the robot proves less than reliable, the devious duo scheme to kidnap the real Kong from his remote island home of Mondo. But interfering with their plans are the heroic trio of U.S. Cmdr. Carl Nelson, Lt. Jiro Nomura, and Kong's current crush, Lt. Susan Miller. It's up to them to outwit the greedy ape-nappers in this sci-fi adventure that takes Kong to unprecedented heights of excitement.
Yes it was complete crap, but the highlight for me was the exceptionally cute little Japanese hottie (Madame X - should be Madame Sex imho) who finally changes over to the side of pure goodness (the big KK and his minions) before being shot by the evil Japanese Dr Who (no, not that one).
And as always, Tokyo gets its ass kicked yet again in this silly romp.
I give it 4 out of 5 dingleberries on my silly movie scale