There's a new sheriff in town and his name is Space Sheriff Gavan by Medicom Toys

Space Sheriff Gavan (宇宙刑事ギャバン Uchū Keiji Gyaban) is the first of the Metal Hero Series. It aired on TV Asahi from 5 March 1982 through February 25, 1983. For distribution purposes, Toei refers to this television series as Space Cop Gaban.

Earth is invaded by the Makuu Empire (literally "demon space"), led by Don Horror, who had first destroyed a space colony near Earth. Space Sheriff Gavan from the Galactic Union Police (銀河連邦警察 Ginga Renpō Keisatsu), arrives in his spaceship, the Dolgiran. He comes from the Bird Planet, the planet where Space Sheriffs are trained and where they are stationed while on call. Gavan is asked to defend the Earth, which is his mother's planet of origin. [source: wiki]

This series began the Space Sheriff Series (宇宙刑事シリーズ Uchū Keiji Shirīzu) and featured a police hero sent to Earth to battle a rampaging force of aliens. This series is visually influenced by Star Wars. Gavan proved popular enough to spawn two direct sequels and introduce a new genre in Japanese television. Gavan was played by Kenji Ohba.

Real Action Hero (RAH) Space Sheriff Gavan by Medicom - Price 19,950 Yen.