Watch Underdog: The Ultimate Collection Season 1 Episode 11 - The Marbleheads, Parts 1 & 2

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Underdog: The Ultimate Collection   Season 1 Episode 11
Rock-eating Marbleheads from the Planet Granite have invaded Earth.
First Aired: October 1, 1966 - 18 Minutes Runtime
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Watch Underdog: The Ultimate Collection - The Marbleheads, Parts 1 & 2 (s1 e11) Online - Watch online anytime: Buy, Rent

Underdog: The Ultimate Collection , Season 1 Episode 11, is available to watch and stream on Classic Media. You can also buy, rent Underdog: The Ultimate Collection on demand at Amazon online.