The Marbleheads, Part 1

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Underdog - S3 - E13

The Marbleheads, Part 1

A strange object crash-lands on earth. A group of scientists check out the mysterious object, determining that it's a harmless, dead comet. The scientists leave the scene unaware of the fact that a secret door opens from the center of this strange thing and two evil looking space aliens emerge from this strange object.

Underdog: Season 3 - 40 Episode s