Although I don't really know what the hell Gaiking is (apart from the fact that it's an old Japanese anime t.v. series wth Mecha's in it) I did seem to own a couple of the toys from back in the 70's/80's, which I still have.
Today I come across this frickin awesome looking teaser trailer for an upcoming movie based on the series on Youtube. It looks sweet!
You can read about Gaiking (if you have as little idea what it's all about as me) on the Wiki page HERE.