Poster of Cast and Crew in ThunderCats - Season 4 - Episode 1 - Return to Thundera (1)

ThunderCats - Season 4 - Return to Thundera (1) (Episode 1)

Plot: The Ancient Spirits of Evil give new life to Mumm-Ra and Ma-Mutt, send them to New Thundera, and build a new Pyramid for Mumm-Ra. The Thundercats say goodbye to Third Earth and depart for Thundera, leaving Tygra and Pumyra behind to watch Cat's Lair and the Tower of Omens
Episode Aired On:
Monday, September 4 1989
35 years ago