Season 4 (1989)

Return to Thundera (1)
6.0

September 4, 1989 • 22m

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. ...Read more

Return to Thundera (2)
6.0

September 5, 1989 • 22m

More and more earthquakes are ocurring because of the malfunctioning Gyroscope. Meanwhile Lion-O recieves a distress signal from T...Read more

Return to Thundera (3)
6.0

September 6, 1989 • 22m

Lion-O, Panthro, and the Thunderkittens take the Whisker, a new flying vehicle, to the Churning Rocks to rescue the Thunderian ref...Read more

Return to Thundera (4)
6.0

September 7, 1989 • 22m

Mumm-Ra sends Ma-Mutt disguised as Mandora to free the Mutants from Capt. Bragg's circus train and sends Bragg and Crowman falling...Read more

Return to Thundera (5)
6.0

September 8, 1989 • 22m

After another earthquake caused by Mumm-Ra ruins the new Cats Lair construction site, the Thundercats go to see Jaguara and confro...Read more

Leah
6.0

September 11, 1989 • 22m

The Ancient Spirits of Evil bring the Mirror Wraith to Mumm-Ra, and he disguises it as a child's toy. Mumm-Ra then intercepts a th...Read more

Frogman
6.0

September 12, 1989 • 22m

Wily Kit and Kat are constructing a well for the New Cat's Lair on New Thundera. The Thundercats on New Thundera receive a distres...Read more

The Heritage
6.0

September 13, 1989 • 22m

Wily Kit and Kat, exploring New Thundera, stumble upon an Orb of Gold, and pick it up thinking that it is apart of their Heritage....Read more

Screwloose
6.0

September 14, 1989 • 22m

Jaguara cannot work New Thundera’s Gyro on her own. The Thundercats order a robot to aid her in running the Gyro. Screw Loose, a r...Read more

Malcar
6.0

September 15, 1989 • 22m

Mumm-Ra summons Malcar, an ancient alchemist, to return from the dead. The alchemist returns old and weak, as he was when he died....Read more

Helpless Laughter
6.0

September 18, 1989 • 22m

A convergence of the Moons of Plun-Darr causes a drought on Thundera. Panthro and Snarf go looking for water, then Ezuka, the flyi...Read more

Cracker's Revenge
6.0

September 19, 1989 • 22m

Capt. Cracker and his mechanical parrot Polly land on Way-Out Back and free the Lunatacs and put Bragg and Crownan in one of the t...Read more

The Mossland Monster
6.0

September 20, 1989 • 22m

Tygra, on a solo trip to New Thundera to meet the other Thundercats, decides to take a shortcut through a meteor shower. His ship ...Read more

Ma-Mutt's Confusion
6.0

September 21, 1989 • 22m

Mumm-Ra has a new device, the Babylonian Barbarian Boiler, that he plans to use on Cats Lair. Ma-Mutt fools around too much and Mu...Read more

Shadowmaster
6.0

September 22, 1989 • 22m

From the Shadow Realm, the Shadowmaster contacts the Ancient Spirits of Evil (ASOE), telling them of how he captured Lion-O's fath...Read more

Swan Song
6.0

September 25, 1989 • 22m

An Ecology Inspector (EI) comes to Thundera to inspect the new Cats Lair. His ship uses the SWAN system (Space Way Airborn Navigat...Read more

Touch of Amortus
6.0

September 26, 1989 • 22m

Mumm-Ra orders Amortus, a being he banished to the Land of No Return centuries ago, to destroy Lynx-O. Amortus makes Lynx-O crash ...Read more

The Zaxx Factor
6.0

September 27, 1989 • 22m

Vultureman escapes from exile by hijacking a bookmobile. He finds a disk containing ancient history about two powerful evil forces...Read more

Well of Doubt
6.0

September 28, 1989 • 22m

The Thundercats use a new Tower signal to guide a Thunderian ship in; aboard are Baron Tass and Mr. Grubber, a devious pair of Thu...Read more

The Book of Omens
6.0

September 29, 1989 • 22m

New Thundera is being torn apart and the Thundercats must present certain artifacts at various dangerous locations that used to be...Read more