The Space Conqueror was originally produced in 1961 by Daiya, a leading manufacturer of battery-operated tin toys in the post-war era, producing a variety of vehicles, animals, and robots. Standing 11 inches tall and with a rotating antenna on its head, the robot walks forward with a determined locomotion, powered by two D batteries. At a certain point, it stops and raises its gun, flashing red lights and making a loud rat-tat-tat sound. Then it lowers the gun and resumes walking.
The Space Conqueror was sold in three color versions – red, blue and green, with slightly different lithography for each. The green version is considered the most rare and valuable, while the blue version is the most common. The robot was marketed in the West by Cragstan, an American toy distributor that imported many Japanese tin toys.