Sparkman (found South Korean sci-fi film; 1988)
From The Lost Media Wiki
Sparkman is a 1988 Korean film about a super hero with metallic armor, in a very similar vein to the characters in Mighty Morphin Power Rangers or Ultraman.
Nothing more is known about the movie, though two videos containing footage are on YouTube. One is a 10-minute compilation of various fight scenes and the other is a short one-minute clip. Both videos have very good video quality (even for a 1988 movie), hinting at the possibility of a DVD release.