- Country: USA
- Genres: Action, Adventure, Animation
- Release: 1988-09-05
- Director: N/A
- Writers: Peter Lawrence , Ted Wolf , Leonard Starr
- Language: English
- Stars: Bob McFadden , Bob McFadden , Bob McFadden , Earl Hammond , Earl Hammond , Earl Hammond , Lynne Lipton , Lynne Lipton , Lynne Lipton , Larry Kenney , Larry Kenney , Earle Hyman , Earle Hyman , Peter Newman , Peter Newman , Gerrianne Raphael , Doug Preis
- Runtime: 22 min
- Awards: N/A
- AKA: Thundercubs: Part I (United States of America)
- Plot:
Mumm-Ra learns of the legendary Treasure of Thundera and the Sword of Plundar, which destroyed Thundera. He and Ma-Mutt travel back in space and time to search the debris of the planet for the sword.
- IMDB:tt0922862
Thundercats Season 3 Cast
Bob McFadden
Lynx-O
Bob McFadden
Snarf
Bob McFadden
Snarfer
Earl Hammond
Jaga
Earl Hammond
Mumm-Ra
Earl Hammond
Vultureman
Lynne Lipton
Cheetara
Lynne Lipton
Wilykit
Lynne Lipton
Luna
Larry Kenney
Lion-O
Larry Kenney
Jackalman
Earle Hyman
Panthro
Earle Hyman
Redeye
Peter Newman
Tygra
Peter Newman
Wilykat
Gerrianne Raphael
Pumyra
Doug Preis
Alluro