Mego produced the “Micronauts” action figures that you see below between 1976 and 1980. I remember getting a couple of these guys for Christmas when I was in … kindergarten? First grade?
I had no idea who they were. (I grouped them together with my “Metal Man” action figures — another toy line in the late 70’s that is now mostly forgotten.) I still loved them, though. They weren’t as cool as “Star Wars” figures, but they were still space-based toys. (At least they looked that way.) And their partially transparent bodies made them unique.
It was this toy line that gave rise to the “Micronauts” comic book series from Marvel. (I had a few issues in the early 1980’s — it was trippy stuff.)