Thundera is a world in crisis in a distant galaxy. The planet has become unstable and will collapse soon. The people of Thundera, known as Thundercats, flee the dying planet in their spaceship. During the flight their ship is damaged when they are attacked by evil mutants. The eldest aboard, Jaga, sacrifices himself to ensure that the ship lands safely on Third Earth. The remaining Thundercats (Panthro, Cheetara, Tygra, Wilykat, Wilykit, Snarf and Lion-O with the use the magic of the Sword of Omens) form a headquarters at a place they name Cat's Lair. From there, they fight the evil mutants with the goal of saving themselves and restoring peace to Third Earth. Meanwhile, the mutants have found a powerful new leader, Mumm-Ra, the Ever-Living. This will not be an easy fight.

Genre: Animation, Children

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    • Episode 31

      31. The Book of Omens

      aired: Fri, Dec 5, 1986

      The ThunderCats finally open the Book of Omens. The Guardian of the Book explains that the ancient artifacts they have gathered must be presented at four different locations at precisely five clicks before the twenty-fourth hour.

    • Episode 30

      30. Well of Doubt

      aired: Thu, Dec 4, 1986

      The ThunderCats build a Homing Beacon Tower just in time to guide a group of Thundarian refugees back to the planet.

    • Episode 29

      29. The Zaxx Factor

      aired: Wed, Dec 3, 1986

      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 28

      28. Touch of Amortus

      aired: Tue, Dec 2, 1986

      Amortus, an evil tentacled creature banished eons ago by the Thunderians, has returned to the new ThunDERa through Mumm-Ra's cauldron.

    • Episode 27

      27. Swan Song

      aired: Mon, Dec 1, 1986

      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 26

      26. Shadowmaster

      aired: Fri, Nov 28, 1986

      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 25

      25. Ma-Mutt's Confusion

      aired: Thu, Nov 27, 1986

      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 24

      24. The Mossland Monster

      aired: Wed, Nov 26, 1986

      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 23

      23. Cracker's Revenge

      aired: Tue, Nov 25, 1986

      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 22

      22. Helpless Laughter

      aired: Mon, Nov 24, 1986

      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 21

      21. Malcar

      aired: Fri, Nov 21, 1986

      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 20

      20. Screw Loose

      aired: Thu, Nov 20, 1986

      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 19

      19. The Heritage

      aired: Wed, Nov 19, 1986

      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 18

      18. Frog Man

      aired: Tue, Nov 18, 1986

      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 17

      17. Leah

      aired: Mon, Nov 17, 1986

      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 named Leah is rescued by the ThundarCats.

    • Episode 16

      16. Return to Thundera Part 5

      aired: Fri, Nov 14, 1986

      Mumm-Ra realizes he must destroy the new ThunDERa in order to destroy the ThunderCats, so he travels to the Great Beneath and blasts the gyroscope into rapid decay.

    • Episode 15

      15. Return to Thundera Part 4

      aired: Thu, Nov 13, 1986

      Knowing he cannot defeat both Tygra and Punyra on Third Earth and the ThunderCats on the new ThunDERa, Mumm-Ra orders Ma-Mutt to rescue the Mutants from Captain Bragg.

    • Episode 14

      14. Return to Thundera Part 3

      aired: Wed, Nov 12, 1986

      Enraged by his failure to destroy the ThunderCats, Mumm-Ra returns to the Great Beneath as Jaga the Wise.

    • Episode 13

      13. Return to Thundera Part 2

      aired: Tue, Nov 11, 1986

      The ThunderCats are determined to stay on the new ThunDERa despite its unstable environment. Meanwhile, Mumm-Ra summons Grune the Destroyer to help him destroy the ThunderCats.

    • Episode 12

      12. Return to Thundera Part 1

      aired: Mon, Nov 10, 1986

      With Mumm-Ra banished form Third Earth, the ThunderCats return to their home planet ThunDERa. The Ancient Spirits decide to give Mumm-Ra one last chance to destroy the ThunderCats.

    • Episode 11

      11. The Last Day

      aired: Fri, Nov 7, 1986

      The Ancient Spirits give Mumm-Ra until sundown to destroy the ThunderCats or be banished from Third Earth forever.

    • Episode 10

      10. The Circus Train

      aired: Thu, Nov 6, 1986

      Wilykat is hypnotized and stows away with Captain Bragg, a bounty hunter who poses as the leader of a traveling circus.

    • Episode 9

      9. The Jade Dragon

      aired: Wed, Nov 5, 1986

      Mumm-Ra's mentors, the Ancient Spirits of Evil, threaten to relinquish Mumm-Ra's rule over Third Earth if he fails to destroy the ThundarCats.

    • Episode 8

      8. The Thunderscope

      aired: Tue, Nov 4, 1986

      Snarf discovers an ancient Thundarian artifact, the Thunderscope, amid the wreckage of the ThunderCats' original spaceship. The object has the power to immediately identify any object of Thundarian origin.

    • Episode 7

      7. The Wild Workout

      aired: Mon, Nov 3, 1986

      Following up on a rumor, the ThunderCats take the Feliner to ThunDERa where supposedly a piece of the Treasure of ThunDERa lies within the Caverns of Cold. Mumm-Ra watches them in his cauldron and concocts a trap for them.

    • Episode 6

      6. Bracelet of Power

      aired: Fri, Oct 31, 1986

      Snarf accidentally discovers the Bracelet of Power has the power to control the ThunderCats. Gradually, he starts to coerce the ThunderCats to do his bidding. Snarf then loses the bracelet to Mumm-Ra.

    • Episode 5

      5. Locket of Lies

      aired: Thu, Oct 30, 1986

      Mumm-Ra retrieves the ancient Thundarian artifact the Locket of Lies. Mumm-Ra and Ma-Mutt use the artifact to lure the ThunderCats into a concealed pit-trap.

    • Episode 4

      4. The Formula

      aired: Wed, Oct 29, 1986

      Aluro invents a supercharged fuel that finally gives the SkyTomb enough power to reach the new ThunDERa.

    • Episode 3

      3. Return of the ThunderCubs

      aired: Tue, Oct 28, 1986

      Growing impatient with Mumm-Ra's repeated failures to destroy the ThunderCats, the Ancients diagram a plan for him to claim the Treasure of ThunDERa.

    • Episode 2

      2. Key to Thundera

      aired: Mon, Oct 27, 1986

      Lion-O is about to give up deciphering the hieroglyphics in the Book of Omens, when Snarf suggests using the Sword of Omens as a magnifying glass. This causes to book to open and sucks Lion-O and Snarf into it.

    • Episode 1

      1. Exile Isle

      aired: Fri, Oct 24, 1986

      The Luna-Taks kidnap the ThunderKittens. The ThunderCats rescue the ThunderKittens and capture the Luna-Taks in the process. The ThunderCats sentence the Luna-Taks to exile on Exile Island.

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    • Episode 33

      The Formula

      aired: Wed, Nov 6, 1985

      Wizz-Ra appears before Cheetara. Disturbed by him, she considers asking the other ThunderCats for advice, but fears they will ridicule her.

    • Episode 32

      Return of the ThunderCubs

      aired: Tue, Nov 5, 1985

      Mumm-Ra summons the Driller to destroy the Cats' Lair by drilling a tunnel from the Acid lake to the Lair's foundations.

    • Episode 31

      Key to Thundera

      aired: Mon, Nov 4, 1985

      Officer Mandora arrests the renegade robot Cracker and takes his Space Freighter to the Grey Planet Prison. Cracker traps her and releases all the prisoners

    • Episode 30

      Exile Isle

      aired: Fri, Nov 1, 1985

      The ThunderCats have almost completed their spacecraft, the Feliner, but can't make it fly because they lack a Megacondensor.

    • Episode 29

      The Telepathy Beam

      aired: Thu, Oct 31, 1985

      Ratar-O, the most powerful of all the Mutant Warlords, comes to Third Earth and takes control of the Mutants.

    • Episode 28

      Crystal Canyon

      aired: Wed, Oct 30, 1985

      Mum-Ra has a phial of miniaturization gas. Vultureman builds a mechanical wolfrat to infiltrate the gas into the Cats' Lair.

    • Episode 27

      Chain of Loyalty

      aired: Tue, Oct 29, 1985

      Infuriated by the Mutants' excuse that the Sword of Omens is invincible, Mumm-Ra summons Rachiman, a legendary Samurai, and his sword, the Thunder-Cutter.

    • Episode 26

      Totem of Dera

      aired: Mon, Oct 28, 1985

      A damaged alien spaceship makes contact with Cheetara's Sixth Sense. The telepathic communication drains her strength and she ages rapidly.

    • Episode 25

      Thundercubs: Part V

      aired: Fri, Oct 11, 1985

      Snarf searches the Cats' Lair and discovers all the ThunderCats have been captured by the Mutants.

    • Episode 24

      Thundercubs: Part IV

      aired: Thu, Oct 10, 1985

      Safari Joe, an intergalactic Big Game Hunter, arrive on Third Earth to hunt the ThunderCats.

    • Episode 23

      Thundercubs: Part III

      aired: Wed, Oct 9, 1985

      Tartana, the Crystal Queen, steals the Ariettabird and cages it in her Crystal Kingdom. The Ariettabird's beautiful song brings a fruitful harvest to the Berbils and without it, their crops will die.

    • Episode 22

      Thundercubs: Part II

      aired: Tue, Oct 8, 1985

      Jaga is captured by Nemex, the Astral Imprisoner and only Lion-O can save him.

    • Episode 21

      Thundercubs: Part I

      aired: Mon, Oct 7, 1985

      While swimming, Wilykat is apparently devoured by an amphibious monster, which is actually a robot belonging to Dr. Dometone.

    • Episode 20

      Vultureman's Revenge

      aired: Fri, Oct 4, 1985

      The Mutants create Warbot, a Plun-Darrian war robot, to destroy Cats' Lair.

    • Episode 19

      Hair of the Dog

      aired: Thu, Oct 3, 1985

      Wilykat and Wilykit explore the Ruined Temple. They move a hexagonal rock and unwittingly free Mongor, the external image of fear.

    • Episode 18


      aired: Wed, Oct 2, 1985

      Mumm-Ra calls upon the Driller to kidnap Panthro with the aid of a sleeping potion.

    • Episode 17

      Hachiman's Honor

      aired: Tue, Oct 1, 1985

      Mumm-Ra transforms himself into a troll named Grygory Grygion and tricks Lion-O into attacking Tygra and breaking the Sword of Omens.

    • Episode 16

      Mumm-Rana's Belt

      aired: Mon, Sep 30, 1985

      The Mutants bombard the Warrior Maidens' Treetop Kingdom with liquid fireballs mechanically launched from their new Firethrower.

    • Episode 15


      aired: Fri, Sep 27, 1985

      Jaga tells the homesick Lion-O that the Time Capsule containing the history of Thundera is still intact somewhere on Third Earth.

    • Episode 14

      Day of the Eclipse

      aired: Thu, Sep 26, 1985

      Mumm-Ra raises the Mutants' buried spaceship from beneath the Desert Of Sinking Sands.

    • Episode 13

      The Sound Stones

      aired: Wed, Sep 25, 1985

      The ThunderCats track a falling Meteor of Thundrillium, their power source, to Hook Mountain, the icy landscape ruled by Snowman and his giant cat, Snowmeow.

    • Episode 12

      Time Switch

      aired: Tue, Sep 24, 1985

      Mumm-Ra allies with the Egyptian princess Ta-She to gain the Doomgaze, an entrancing power which could enslave the ThunderCats.

    • Episode 11

      Ravage Island

      aired: Mon, Sep 23, 1985

      While looking for valuables in an abandoned tomb, two Bolkins accidentally release a ghostly renegade named Grune.

    • Episode 10

      Together We Stand

      aired: Fri, Sep 20, 1985

      Mandora of the interplanetary Control Force enlists Lion-O and Snarf to pursue three criminals they unwittingly released from her cell sled.

    • Episode 9

      The Mad Bubbler

      aired: Thu, Sep 19, 1985

      While investigating a series of earthquakes, Tygra falls into the earth and confronts a giant worm head in the world of the Mole People.

    • Episode 8

      The Mask of Gorgon

      aired: Wed, Sep 18, 1985

      Wilykit and Wilykat help a friendly Wollo who is being robbed by two gargoyle-like creatures. During the chase, Wilykat is caught in Baron Karnor's Tower of Traps.

    • Episode 7

      Psych Out!

      aired: Tue, Sep 17, 1985

      Searching for Thundrillium, the ThunderTank's power sources, Tygra is caught in the Cave of Time, aging him rapidly and making him too weak to escape.

    • Episode 6


      aired: Mon, Sep 16, 1985

      The Code Of Thundera is called into action as Lion-O saves a unicorn from the Berserkers and their leader, Hammerhead.

    • Episode 5

      Mumm-Ra Lives!: Part V

      aired: Fri, Sep 13, 1985

      Mumm-Ra changes into a puma and stages a fake heroic deed in order to convince the ThunderCats that he's from their home planet.

    • Episode 4

      Mumm-Ra Lives!: Part IV

      aired: Thu, Sep 12, 1985

      The ThunderTank is given a trial run as the ThunderCats attempts to liberate the Brutemen from slavery.

    • Episode 3

      Mumm-Ra Lives!: Part IIII

      aired: Wed, Sep 11, 1985

      The ThunderCats meets the Berbils, a group of robot teddy bear-like creatures from the planet Ro-Bear.

    • Episode 2

      Mumm-Ra Lives!: Part II

      aired: Wed, Jan 23, 1985

      The Mutants form an unholy alliance with Mumm-Ra and set forth to destroy the ThunderCats.

    • Episode 1

      Mumm-Ra Lives!: Part I

      aired: Wed, Jan 23, 1985

      From beyond any known galaxy, bring with them the laws and ideals of their doomed planet, Thundera, come the ThunderCats.

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