Ultra 7

The Formless Invaders (Enter Dan Moroboshi) (1x1)

Air date: Oct 01, 1967

When a sinister alien invasion causes the mysterious disappearances of innocent people, the Ultra Garrison (headed by the Terrestrial Defense Force) goes into action for the first time, only to get help from a young drifter named Dan Moroboshi, who, unbeknownst to them, is actually the mighty Agent 340, who would soon best be known on Earth as Ultra Seven!