- Country: USA
- Genres: Action, Adventure, Animation
- Release: 1989-09-04
- Director: N/A
- Writers: Peter Lawrence
- 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 , Peter Newman , Gerrianne Raphael , Gerrianne Raphael , Doug Preis
- Runtime: min
- Awards: N/A
- AKA: Return to Thundera!: Part I (United States of America)
- Plot:
The Thundercats depart Third Earth for New Thundera, leaving Tygra and Pumyra behind to watch over the Cat’s Lair and Tower of Omens. Meanwhile, the Ancient Spirits of Evil resurrect Mumm-ra, building a new pyramid on New Thundera.
- IMDB:tt0922803
Thundercats Season 4 Cast
Bob McFadden
Lynx-O
Bob McFadden
Snarf
Bob McFadden
Snarfer
Earl Hammond
Jaga
Earl Hammond
Mumm-Ra
Earl Hammond
RoBear Bill
Lynne Lipton
Cheetara
Lynne Lipton
Wilykit
Lynne Lipton
Willa
Larry Kenney
Lion-O
Larry Kenney
Snarf Egbert
Earle Hyman
Panthro
Earle Hyman
Ancient Spirits of Evil
Peter Newman
Tygra
Peter Newman
Wilykat
Peter Newman
Bengali
Gerrianne Raphael
Pumyra
Gerrianne Raphael
Jagara
Doug Preis
Alluro