Seasons & Episodes
Exodus
With their home planet, Thundera, about to explode, the Thunderians flee to a distant galaxy. Before they can make the l
The Unholy Alliance
The Mutants, who have also reached Third Earth, encounter an old pyramid. It turns out to be the home of Mumm-Ra the Eve
Berbils
The Ro-Bear Berbils are a friendly group of robot bears that live on Third Earth. Lion-O and Snarf don't know this, and
The Slaves of Castle Plun-Darr
The homeless Mutants also make plans to build their home. They enslave a primitive race of beings called Brute-Men to do
Pumm-Ra
Mumm-Ra uses his shapeshifting abilities to pass himself off as a Thunderian so he can stage the "rescue" of Cheetara an
The Terror of Hammerhand
When Snarf and a young unicorn are captured by the pirate Hammerhand and his crew of Berserkers, Lion-O goes to rescue t
Trouble with Time
With their supply of Thundrillium running low, the Thundercats set off in search of a fresh supply. Tygra detects a larg
The Tower of Traps
Wilykit and Wilykat try to stop a band of living gargoyles from robbing a Wollo but fail to do so and trail the gargoyle
The Garden of Delights
While investigating an earthquake, Tygra stumbles across the Garden of Delights and meets a talking plant named Silky, w
Mandora: the Evil Chaser
Lion-O and Snarf stumble upon a portable jail cell, and mistakenly open it up. Three of the galaxy's worst villains esca
The Ghost Warrior
Two Bolkins (sheep-like beings from Third Earth) unleash the ghost of Grune the Destroyer, a renegade Thundercat who onc
The Doomgaze
Mumm-Ra and the Mutants plot to open the Time Warp Prison and release the evil Princess Ta-She in order to use her deadl
Lord of the Snows
When a meteorite made of pure Thundrillium crashes on Hook Mountain, the Thundercats decide to use it to replenish their
The Spaceship Beneath the Sands
Tired of constantly being bested by the Thundercats, the Mutants have Mumm-Ra raise their spaceship and salvage their ve
The Time Capsule
Lion-O becomes homesick, and his memories of Thundera are almost nonexistent. Jaga appears to Lion-O and tells him that
The Fireballs of Plun-Darr
The Mutants, once again searching for a way to destroy the Thundercats, recover some more items from their spaceship. Th
All That Glitters
Mumm-Ra tricks Lion-O into using the Sword of Omens against Tygra, causing the blade to break in half and lose its power
Spitting Image
Mumm-Ra creates device that can make Panthro clones. He embeds the spirit of Hammerhand into his clone and sets it free
Mongor
Wilykit and Kat accidentally free an ancient monster that was banished to an old shrine centuries ago. The evil monster,
Return to Thundera
The Thundercats briefly show Lion-O how the time capsule they recovered from the caveman works. Curious to see more, Lio
Dr. Dometone
An old scientist seeks the Thundercats to help him save the oceans of Third Earth. Long ago, a crack was made in the bot
The Astral Prison
Jaga is captured by Nemex, an evil being in the Astral World, and Lion-O tries to find a way to rescue him. Third Earth
The Crystal Queen
The Thundercats think that Snarf is getting too old, and that he is not up to doing as much as he does. To prove them wr
Safari Joe
An evil hunter lands on third earth in search of prey to hunt. His holographic machine can tell him about all of the Thu
Snarf Takes Up the Challenge
Nearly all the Thundercats have been captured by the Mutants and imprisoned in Mumm-Ra's Pyramid, forcing Snarf to use h
Sixth Sense
An alien spaceship crash lands on third earth, and it can somehow communicate with Cheetara through her sixth sense. She
The Thunder-Cutter
Mumm-Ra summons the great samurai Hachiman to seek and destroy Lion-O. He tells Hachiman that Lion-O and the Thundercat
The Wolfrat
Mumm-Ra has a phial of miniaturization gas. Vultureman builds a mechanical Wolfrat to infiltrate the gas into the Cats'
Feliner (1)
Vultureman summons Ratar-O to take him to the planet of the Snarfs to capture one of them and use it as ransom with the
Feliner (2)
The ThunderCats race to try to salvage the part they need for the Feliner from the wreck of the Rat Star before the Muta
Mandora and the Pirates
Mandora, on space-patrol, encounters an old pirate ship which doesn't meet inter-galactic standards. She boards the shi
Return of the Driller
The Driller, Mumm-Ra's servant who captured Panthro for him in Spitting Image, returns to aid Mumm-Ra once again. His jo
Dimension Doom
Wiz-Ra, Mumm-Ra's enemy from long ago, comes back every 7000 years through a portal that just happens to be in Cheetara'
Queen of 8 Legs
Mumm-Ra finds out that the Kingdom of Webs has a new Queen, Spidera. Mumm-Ra thinks he can lure Lion-O into her lair.
Sword in a Hole
Mumm-Ra hires Captain Shiner to send a fake distress signal to the ThunderCats. With their new vehicle, the Feliner, th
The Evil Harp of Charr-Nin
Wilykit and Kat find an ancient harp that has a genie in it. His name is Charr-Nin. Mumm-Ra appears to the genie and te
Lion-O's Anointment First Day: Trial of Strength
On Lion-O's 20th birthday, he must pass a set of trials to become the true Lord of the ThunderCats. Even though he is th
The Demolisher
A vagabond space traveler lands on Third Earth to challenge Mumm-Ra to a fight. The Demolisher is victorious against Mu
Monkian's Bargain
Monkian goes to Mumm-Ra and agrees to give him anything if Mumm-Ra will make him powerful enough to rule Third Earth. M
Tight Squeeze
After the Mutants fail to ambush and defeat the Thundercats with Vultureman's new Thundrainium cannon, Vultureman, furio
The Micrits
Micrits, a tiny race of human-like figures, happen to live right outside Cats' Lair. Unaware of their existence, Lion-O
Lion-O's Anointment Second Day: The Trial of Speed
On the second day of his trials, Lion-O must race Cheetara through the dangerous lands of Third Earth. Although Cheetara
The Rock Giant
Mumm-Ra awakens the Rock Giant, an ancient monster made of stone which looked like a mountain to the TCats. When it wake
Jackalman's Rebellion
The normally submissive JackalMan decides to start his own army in hopes of conquering Third Earth by himself. He does m
Turmagar the Tuska
An evil robot monster is attacking the Tuska Village, in an area unexplored by the Thundercats. Turmagar, the leader of
Lion-O's Anointment Third Day: Trial of Cunning
Wily Kit and Kat stand in Lion-O's way on the third day of his trials. Lion-O must beat them through the maze of infinit
The Mumm-Ra Berbil
Mumm-ra transforms himself into a ro-bear berbil (a Thundercat ally). He acts hurt and the Thundercats let him stay at C
Mechanical Plague
Panthro invents flying video cameras which are suppose to record the events that take place on third-earth so they could
Trapped
When a big storm hits Third Earth, the Thunderkittens are trapped in an old space capsule. Meanwhile, Tygra and Cheetra
Lion-O's Anointment Fourth Day: The Trial of Mind Power
Lion-O undergoes the fourth task in his Anointment Trial.
Excalibur
The story of Excalibur, the greatest sword in history, is revealed to Mumm-Ra, who is then determined to find the Excali
Secret of the Ice King
A giant Ice King is accidentally released from his glacial prison and attacks the Castle of the Snowmen.
Good and Ugly
A Terator Starship, an extremely ugly spaceship, is pursued by a Kymera Craft, a visually appealing spaceship. The Terat
The Transfer
A spaceship freighted with a lethal radioactive sphere is on a collision course for Third Earth.
Divide and Conquer
Vultureman invents a voice imitator that imitates the ThunderCats' voices. He uses it to lure the ThunderCats into peril
Dream Master
Mumm-Ra transforms into Mumm-Ra the Dream Master and summons spectral Dream Selves from the sleeping Panthro, Cheetara,
Out of Sight
Willa is practicing her long-bow skills when a warning device alerts her to a Mutant attack. Willa is captured and the T
The Mountain
Mumm-Ra summons the Mutants and threatens to banish them from Third Earth unless they bring him the Sword of Omens.
The Superpower Potion
Vultureman invents a Super Power Potion which give him magical powers, enabling him to mesmerize and defeat Tygra.
Eye of the Beholder
Jackalman ambushes Snarf and attempts to steal the Sword of Omens. This gives Panthro the idea to make a duplicate sword
Lion-O's Anointment Final Day: The Trial of Evil
The concluding trial in Lion-O's Anointment Trials pits him alone and weaponless against the evil Mumm-Ra.
The Trouble with ThunderKittens
To prove themselves worthy of being ThunderCats, the ThunderKittens borrow the other ThunderCats' weapons and practice w
Mumm-Rana
The Feliner is attacked by the RatStar, manned by the Mutants. Jackalman, Monikan, and S-S-Slithe are ejected and saved
The Shifter
Vultureman invents the Shifter, a device that can switch personalities, and uses it on Panthro's personality and Snarf's
Fond Memories
Mumm-Ra creates a museum where painting and statues come alive to oppose the ThunderCats.
ThunderCats Ho! (1)
Recurring nightmares of Thunderians killed on Thundera as he fled to safety with Jaga and the other ThunderCats awaken L
ThunderCats Ho! (2)
Lion-O's rescue attempt fails and the captured Thunderians are taken to Fire Rock Mountain after another failed attempt
ThunderCats Ho! (3)
Lion-O loses the Sword of Omens in an avalanche. Panthro battles the Fist-Pounder with the ThunderTank. The Mutants arri
ThunderCats Ho! (4)
The Thunderians attempt to escape their prison. Lion-O arrives at Fire Rock Mountain and is confronted by Hachiman who b
ThunderCats Ho! (5)
Lion-O and Hachiman are reconciled and the ThunderCats close in on rescuing the Thunderians from Fire Rock Mountain. But
Mumm-Ra Lives (1)
Mumm-Ra is weak and faces the threat of three new ThunderCats; he sends the Mutants to release his old enemies, the Luna
Mumm-Ra Lives (2)
The Mutants succeed in releasing the Lunatacs. The ThunderCats discover their Thundrylium mine is being looted and peopl
Mumm-Ra Lives (3)
The ThunderCats build the Tower of Omens to monitor for Sky Tomb, which will be run by the new ThunderCats. Disguised as
Mumm-Ra Lives (4)
Mumm-Ra's power is restored. Snarfer makes it to Third Earth, but crashes in Dark Side. The ThunderCats rush to his aid
Mumm-Ra Lives (5)
The ThunderCats look for Sky Tomb to free the slaves imprisoned inside it. Bengali must learn the importance of teamwork
Catfight
By disguising himself as Jaga, Mumm-Ra tricks Lion-O into believing the new ThunderCats are traitors so that they will f
Psych Out
Mumm-Ra tells Alluro where to find a talisman that boosts the self-confidence of the one who possesses it so that they b
The Mask of Gorgon
Ma-Mutt digs up an ancient book, which leads Mumm-Ra to search for the ancient evil of the mask of Gorgon
The Mad Bubbler
The Lunatacs look for Thundrylium in a cave on Hook Mountain, only to be driven mad by a strange creature that turns the
Together We Stand
Mumm-Ra coats the Bezerker's weapons and armor with Thundranium. Wilykit and Wilykat find that guarding Cats' Lair is no
Ravage Island
Mumm-Ra activates a mesmerizing beacon on Ravage Island, which draws the ThunderCats to it and takes hold of their minds
Time Switch
While taking care of a dangerous Suspension Capsule, dug up near Cats' Lair, Lion-O is exposed to harmful gasses inside
The Sound Stones
Vultureman builds a sonic gun from a sound stone he stole in Dark Side as the Lunatacs join with him to attack the Tower
Day of the Eclipse
The day of the centennial total eclipse has arrived, and any spell Mumm-Ra casts will last until the next eclipse. He de
Sideswipe
Chilla freezes Snarfer's spaceship as he heads back to the Tower of Omens with Berbil Mexican takeout. When Mandora gets
Mumm-Rana's Belt
Luna discovers that her grandmother's magic belt is now in the possession of Mumm-Rana, who claimed it after battle. She
Hachiman's Honor
While Hachiman is on his way to the Tower of Omens, Luna steals his sword, the ThunderCutter, and gives it to an automat
Runaways
Fed up of feeling useless, Wilykat convinces his twin to run away from home, but living on their own is more dangerous t
Hair of the Dog
While all the ThunderCats except Lion-O are gone, Mumm-Ra switches Ma-Mutt with Snarf. Ma-Mutt poisons Lion-O, allowing
Vultureman's Revenge
Vultureman builds a Thundranium[28] projector, capable of creating concentrated regions of Thundranium. When the Thunder
ThunderCubs (1)
Mumm-Ra learns about the Treasure of Thundera and the Sword of Plundarr (Jaga had beaten Ratilla, who owned the Sword, a
ThunderCubs (2)
Lion-O and the other Thundercats arrive and save Lynx-o and the Thunderkittens from Red Eye and Tug Mug. The Thundercats
ThunderCubs (3)
Mumm-Ra retrieves the Sword of Plundarr and the Thundercats arrive on New Thundera. While the Thundercats want to get th
ThunderCubs (4)
Mumm-Ra tries to get away but the Sword of Omens breaks open the casket dropping the treasure all over the planet, and S
ThunderCubs (5)
Lion-O frees the Thundercubs from Mumm-Ra's spell and the Thundercubs safely leave New Thundera. Lion-O and Snarf must c
Totem of Dera
Mumm-ra finds the Totem of Dera (a part of the T-cat treasure) which has special healing powers and can bring inanimate
The Chain of Loyalty
After looking at the Book of Omens, and seeing a picture of a necklace, Lion-O discovers that there are pictures of the
Crystal Canyon
Lion-O, Lynx-O, Snarf and Tygra go to the Crystal Canyon, thinking the Lunataks somehow got the Treasure of Thundera. Wh
The Telepathy Beam
Vultureman creates a device that plays around with Cheetara's sixth sense. She begins to see images that aren't real, an
Exile Isle
The Thundercats capture the Lunataks and, tired of dealing with their evil ways, decide to exile the Lunataks to Exile I
Key to Thundera
While trying to figure out a way to read the Book of Omens, Lion-O tries looking through the sword at the book. He is im
Return of the ThunderCubs
Panthro, Tygra, and Cheetara return to New Thundera in the Feliner to find more of the Treasure of Thundera, but Mumm-Ra
The Formula
Aluro invents a ""booster"" potion in hopes that it can make Sky Tomb able to fly to Thundera. It doesn't work, and he t
Locket of Lies
On Thundera, Mumm-Ra creates the Locket of Lies and has Mu-Mutt plant it in the Valley of the Snarfs. Eggbert and Oswald
Bracelet of Power
Tygra, Cheetara, and Bengali bring back a few more pieces of the Treasure of Thundera. Snarf is fascinated by a bracelet
The Wild Workout
Lion-O, Panthro, and Snarf set out to look for more pieces of the Treasure of Thundera, and Mumm-Ra sets a trap for them
The Thunderscope
Back visiting their old wreckage site, Lion-O and Snarf stumble upon the Thunder-scope, a legendary thunderian telescope
The Jade Dragon
Mumm-Ra discovers the power of one of the pieces of the treasure of Thundera. The Double-Headed Dragon of Doom, or the J
The Circus Train
A bounty hunter known as Captain Bragg comes to Third Earth to help the Thundercats get rid of the Mutants and the Lunat
The Last Day
With the Mutants and Lunataks gone, the Ancient Spirits of Evil give Mumm-Ra until sunset to destroy all the Thundercats
Return to Thundera (1)
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
Return to Thundera (2)
More and more earthquakes are ocurring because of the malfunctioning Gyroscope. Meanwhile Lion-O recieves a distress sig
Return to Thundera (3)
Lion-O, Panthro, and the Thunderkittens take the Whisker, a new flying vehicle, to the Churning Rocks to rescue the Thun
Return to Thundera (4)
Mumm-Ra sends Ma-Mutt disguised as Mandora to free the Mutants from Capt. Bragg's circus train and sends Bragg and Crowm
Return to Thundera (5)
After another earthquake caused by Mumm-Ra ruins the new Cats Lair construction site, the Thundercats go to see Jaguara
Leah
The Ancient Spirits of Evil bring the Mirror Wraith to Mumm-Ra, and he disguises it as a child's toy. Mumm-Ra then inter
Frogman
Wily Kit and Kat are constructing a well for the New Cat's Lair on New Thundera. The Thundercats on New Thundera receive
The Heritage
Wily Kit and Kat, exploring New Thundera, stumble upon an Orb of Gold, and pick it up thinking that it is apart of their
Screwloose
Jaguara cannot work New Thundera’s Gyro on her own. The Thundercats order a robot to aid her in running the Gyro. Scre
Malcar
Mumm-Ra summons Malcar, an ancient alchemist, to return from the dead. The alchemist returns old and weak, as he was whe
Helpless Laughter
A convergence of the Moons of Plun-Darr causes a drought on Thundera. Panthro and Snarf go looking for water, then Ezuka
Cracker's Revenge
Capt. Cracker and his mechanical parrot Polly land on Way-Out Back and free the Lunatacs and put Bragg and Crownan in on
The Mossland Monster
Tygra, on a solo trip to New Thundera to meet the other Thundercats, decides to take a shortcut through a meteor shower.
Ma-Mutt's Confusion
Mumm-Ra has a new device, the Babylonian Barbarian Boiler, that he plans to use on Cats Lair. Ma-Mutt fools around too m
Shadowmaster
From the Shadow Realm, the Shadowmaster contacts the Ancient Spirits of Evil (ASOE), telling them of how he captured Lio
Swan Song
An Ecology Inspector (EI) comes to Thundera to inspect the new Cats Lair. His ship uses the SWAN system (Space Way Airbo
Touch of Amortus
Mumm-Ra orders Amortus, a being he banished to the Land of No Return centuries ago, to destroy Lynx-O. Amortus makes Lyn
The Zaxx Factor
Vultureman escapes from exile by hijacking a bookmobile. He finds a disk containing ancient history about two powerful e
Well of Doubt
The Thundercats use a new Tower signal to guide a Thunderian ship in; aboard are Baron Tass and Mr. Grubber, a devious p
The Book of Omens
New Thundera is being torn apart and the Thundercats must present certain artifacts at various dangerous locations that