Kyodai (Giant) Hero Openings from the 60's & 70's

The Kyodai hero genre usually involves a man who transforms into the eponymous hero, usually an organic cyborg, android or robot, and changes to an enormous size to battle a giant monster or aliens. The special effect techniques usually involve men in rubber suits, a SFX tradition in Asia.

Dork Note: Here are my favorite Kyodai (Giant) Heroes - Ambassador Magma (Space Giants), Ultraman, and Spectreman (who as a kid I thought was a weird version of Ultraman)