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Official Site: Hasbro

Spiral Zone is a 1987 American science-fiction animated series produced by Atlantic-Kushner-Locke. Based in part from a toy line made by Japanese company Bandai, the series focused on an international group of soldiers fighting to free the world from a scientist who controls much of the Earth's surface. It only ran for one season, with a total count of 65 episodes.

Tonka acquired the license from Bandai and created a different treatment to the series, plus a short-lived toy line. Spiral Zone is known among fans as a series that stood out from other contemporary cartoons of the 80s because of its dark story. The series has not been officially released on DVD by Hasbro, who had acquired Tonka in the 90s, including all the copyrights to their properties.

On June 18, 2007, a renegade military scientist, Dr. James Bent, uses a hijacked space shuttle to drop his deadly Zone Generators across half of the Earth, a region called the Spiral Zone due to its shape.

Millions of people are trapped in the dark mists of the Spiral Zone and transformed into "Zoners" with lifeless yellow eyes and strange red patches on their faces. Because they have no will to resist, Bent - now known as Overlord - makes them his slave army and controls them from the Chrysler Building in New York City.

Zone Riders has not been a contender in any CBUB matches.