When I was a kid, Zillion was just a game on the Master System. It wasn't until gettingt older that I learned of it's toys and cartoons as well. It was around then realization that the weird laser tag gun my friend down the street had was a knock off of the Zillion light gun game released by SEGA. Zillion was a media mix series in Japan that was a collaboration between SEGA and Tatsunoko Productions. There was an anime, toys, and video games. It wasn't much more than a blip on our radars here in the States but reasonably popular in Japan. If you've ever used the Master System Light Phaser, it's specifically the Zillion gun. Pretty weird how that worked out.