Ruby-Spears Productions is a California based entertainment production company that specializes in animation.
The firm was founded in 1977 by veteran animators Joe Ruby and Ken Spears, who had earlier created Scooby-Doo, Where Are You! for Hanna-Barbera. The firm's credits include the animated series Thundarr the Barbarian, and other animated series such as Mr. T, the 1983 version of Alvin and the Chipmunks, and the 1988 Superman series.
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