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ThunderCats Season 4 Episodes
Season 4 Episode Guide
20 Episodes 1989 - 1989
Episode 1
Return to Thundera - 1
Mon, Sep 4, 1989 30 mins
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. The Thundercats soon arrive and begin plans to build a new lair. Mumm-Ra meanwhile learns that the planet's gravity is controled by the Gyroscope under the Churning Rocks at the center of the planet.
Episode 2
Return to Thundera - 2
Tue, Sep 5, 1989 30 mins
More and more earthquakes are ocurring because of the malfunctioning Gyroscope. Meanwhile Lion-O recieves a distress signal from Thunderian refugees, and he, Cheetara, and Snarf go to find them. Mumm-Ra resurrects Grune the Destroyer, and Grune seeks out Lion-O and Cheetara. Grune finds and fights them, breaks the Sword of Omens, and then he chains them up on the Churning Rocks. Snarf, who was hiding, gathers the pieces of the Sword to take back to Bengali to be fixed.
Episode 3
Return to Thundera - 3
Wed, Sep 6, 1989 30 mins
Lion-O, Panthro, and the Thunderkittens take the Whisker, a new flying vehicle, to the Churning Rocks to rescue the Thunderian refugees who had called from there. The Thundercats get captured by Two-Time, a robot with 2 heads. Two-Time takes them aboard his spaceship, Dome-Down, and the Thundercats see that he has also captured the refugees. Lion-O defeats Two-Time and the refugees are freed. Meanwhile, Lynx-O, Cheetara, and Bengali spot Mumm-Ra near the Churning Rocks, and inform Lion-O of this
Episode 4
Return to Thundera - 4
Thu, Sep 7, 1989 30 mins
Mumm-Ra sends Ma-Mutt disguised as Mandora to free the Mutants from Capt. Bragg's circus train and sends Bragg and Crowman falling into deep space. The Mutants are then ordered by Mumm-Ra to get rid of Tygra and Pumyra. The Mutants attack Snowman on Hook Mt. and Snowmeyow gets Pumyra for help and Tygra contacts the real Mandora to save Bragg and Crowman. Then together, they recapture the Mutants.
Episode 5
Return to Thundera - 5
Fri, Sep 8, 1989 30 mins
After another earthquake caused by Mumm-Ra ruins the new Cats Lair construction site, the Thundercats go to see Jaguara and confront Mumm-Ra. Unfortunately, Mumm-Ra puts up a force field over entrance. Jaga appears to Lion-O and tells him to use the Eye of Thundera to get to Jaguara and the Gyroscope. Lion-O does so and battles Mumm-Ra, who throws him into the bottomless pit underneath the Gyroscope. Lion-O however, manages to throw his grappling hook to the top, which pulls him back up.
Episode 6
Leah
Mon, Sep 11, 1989 30 mins
The Ancient Spirits of Evil provide Mumm-Ra with a Mirror Wraith, which can take the form of any shape and travel through space using mirrors as portals. Meanwhile, an escape pod containing a Thundarian child is rescued by the ThundarCats.
Episode 7
Frog Man
Tue, Sep 12, 1989 30 mins
As reconstruction of the new ThunDERa continues, the ThunderKittens drill a water well, where they not only hit water but release an amphibian-like creature with green skin.
Episode 8
The Heritage
Wed, Sep 13, 1989 30 mins
Wilykat and Wilykit discover the Golden Sphere of Setti, an ancient artifact that once belonged to Mumm-Ra. The sphere magnifies his power by four, making him more powerful than the Ancient Spirits of Evil.
Episode 9
The Book of Omens
Thu, Sep 14, 1989 30 mins
The tremors that previously threatens to destroy the new ThunDERa begin again when Jagara loses control of the gyroscope. The ThunderCats bring in a gyroscope specialist robot named Screw-Loose.
Episode 10
Malcar
Fri, Sep 15, 1989 30 mins
In an effort to reach a distressed Thundarian spaceship, the ThunderCats must use all of their supplies of Thundrillium to fuel the Feliner for a deep-space voyage.
Episode 11
Helpless Laughter
Mon, Sep 18, 1989 30 mins
An astronomical lineup of the five Thundarian moons causes a serious drought on the new ThunDERa. Panthro and Snarf take the ThunderTank to collect the remaining water of Dreary Canal. On the way, they are attacked and the ThunderTank crashes.
Episode 12
Cracker's Revenge
Tue, Sep 19, 1989 30 mins
Captain Cracker attacks bounty hunter Captain Bragg, who is holding the exiled Luna-Taks prisoner, and frees the Luna-Taks in order to have them help him return Third Earth to a pirate's paradise.
Episode 13
The Mossland Monster
Wed, Sep 20, 1989 30 mins
Tygra gets caught in a meteor shower while returning from Third Earth. Losing control of the Feliner, he crashes through the atmosphere into the unexplored Mosslands of New ThunDERa, where he awakens the gigantic Monster of the Mosslands.
Episode 14
Ma-Mutt's Confusion
Thu, Sep 21, 1989 30 mins
Mumm-Ra unveils his latest weapon, the Babylonian Barbarian Boiler, to destroy the ThunderCats. The Boiler emits a beam that rapidly melts anything it touches.
Episode 15
Shadowmaster
Fri, Sep 22, 1989 30 mins
A rare lunar eclipse casts an eerie pale over the new ThunDERa. The eclipse opens a portal where the exiled Shadowmaster contacts the Ancient Spirits of Evil.
Episode 16
Swan Song
Mon, Sep 25, 1989 30 mins
The ThunderCats prepare for a visit from the Ecology Inspector. The Inspector hopes to enlist the aid to the ThunderCats in capturing Two-Time, an intergalactic land poacher who has been stealing entire land masses with his geodesic vessel.
Episode 17
Touch of Amortus
Tue, Sep 26, 1989 30 mins
Amortus, an evil tentacled creature banished eons ago by the Thunderians, has returned to the new ThunDERa through Mumm-Ra's cauldron.
Episode 18
The Zaxx Factor
Wed, Sep 27, 1989 30 mins
Vultureman hijacks a space bookmobile to escape Captain Bragg's Circus Train. On board, he learns of the powerful Rosencranz Medallion that once belonged to Mumm-Ra's arch rival Zaxx.
Episode 19
Well of Doubt
Thu, Sep 28, 1989 30 mins
The ThunderCats build a Homing Beacon Tower just in time to guide a group of Thundarian refugees back to the planet.
Episode 20
The Book of Omens
Fri, Sep 29, 1989 30 mins
The ThunderCats open the Book of Omens and learn that the ancient artifacts they have gathered must be presented at four different locations at precisely five clicks before the 24th hour or the ThunderCats will be frozen in time.
