This video is part of an ongoing project to build my low self-esteem issue as a child and a retrospective TV archive...zzzZZZZzzz...wait where was I...

Space Sheriff Gavan is the first of the Metal Hero Series. It aired on TV Asahi from March 5, 1982 through February 25, 1983.

Plot
Earth is invaded by the criminal organization known as Makuu, led by
Don Horror, who had first destroyed a space colony near Earth. Don
Horror wants to dominate the whole universe, and the Earth represents an
obstacle that he has to overcome by turning it into haven for all evil.
In response to Makuu's attack, Space Sheriff Gavan of the Galactic
Union Police
is deployed to Earth to defend his mother's home world. Gavan is helped
by Mimi, the daughter of Commander Qom, and is given information by
Qom, assisted by Marin on his home planet. Gavan goes to Earth to defend
it against Don Horror and his devilish schemes. He settles on Earth incognito as Retsu Ichijouji, taking a job at the Avalon Youth Club in Japan to track Makuu's forces down.
http://en.wikipedia.org/wiki/Space_Sheriff_Gavan