A team of human subterranean explorers and their allies are the surface's main defence against evil invading monsters.

Ended
  • Currently 46.666666666666664/5
(3 votes)
Ratings: TVMaze: No Rating
Released: September 21, 1986
Runtime: 30 min
Genres: Action Sci-Fi Children
Countries: United States
Companies: Syndication Sunbow Productions Marvel Productions Hasbro Toei Animation

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