What are these Quelstar Tin Toys?

After several series of robot art, I became interested in the packaging of tin toy robots from science fiction's Golden Age. Since I could not recreate actual artwork from actual robots of that era, I needed to come up with my own robot designs. And there had to be a company that makes them. That led to rayguns, rockets and spaceships.

Eventually that led to the development of characters, from which some of these robots, rayguns and spaceships would have come.