Season 1
(1985)
Cast
as Lion-O / Jackalman (voice)
as Tygra / WilyKat / Monkian (voice)
as Panthro (voice)
as Cheetara / WilyKit (voice)
as Mumm-Ra / Jaga / Vultureman (voice)
as Snarf / Slithe (voice)
Episodes
Exodus 8.0
January 23, 1985
With their home planet, Thundera, about to explode, the Thunderians flee to a distant galaxy. Before they can make the …
The Unholy Alliance 8.3
January 23, 1985
The Mutants, who have also reached Third Earth, encounter an old pyramid. It turns out to be the home of Mumm-Ra the Ev…
Berbils 7.4
September 11, 1985
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 7.2
September 12, 1985
The homeless Mutants also make plans to build their home. They enslave a primitive race of beings called Brute-Men to d…
Pumm-Ra 8.0
September 13, 1985
Mumm-Ra uses his shapeshifting abilities to pass himself off as a Thunderian so he can stage the "rescue" of Cheetara a…
The Terror of Hammerhand 7.0
September 16, 1985
When Snarf and a young unicorn are captured by the pirate Hammerhand and his crew of Berserkers, Lion-O goes to rescue …
Trouble with Time 7.3
September 17, 1985
With their supply of Thundrillium running low, the Thundercats set off in search of a fresh supply. Tygra detects a lar…
The Tower of Traps 7.3
September 18, 1985
Wilykit and Wilykat try to stop a band of living gargoyles from robbing a Wollo but fail to do so and trail the gargoyl…
The Garden of Delights 6.0
September 19, 1985
While investigating an earthquake, Tygra stumbles across the Garden of Delights and meets a talking plant named Silky, …
Mandora: the Evil Chaser 6.7
September 20, 1985
Lion-O and Snarf stumble upon a portable jail cell, and mistakenly open it up. Three of the galaxy's worst villains esc…
The Ghost Warrior 7.3
September 23, 1985
Two Bolkins (sheep-like beings from Third Earth) unleash the ghost of Grune the Destroyer, a renegade Thundercat who on…
The Doomgaze 6.7
September 24, 1985
Mumm-Ra and the Mutants plot to open the Time Warp Prison and release the evil Princess Ta-She in order to use her dead…
Lord of the Snows 6.7
September 25, 1985
When a meteorite made of pure Thundrillium crashes on Hook Mountain, the Thundercats decide to use it to replenish thei…
The Spaceship Beneath the Sands 7.0
September 26, 1985
Tired of constantly being bested by the Thundercats, the Mutants have Mumm-Ra raise their spaceship and salvage their v…
The Time Capsule 6.4
September 27, 1985
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 6.0
September 30, 1985
The Mutants, once again searching for a way to destroy the Thundercats, recover some more items from their spaceship. T…
All That Glitters 6.0
October 1, 1985
Mumm-Ra tricks Lion-O into using the Sword of Omens against Tygra, causing the blade to break in half and lose its powe…
Spitting Image 6.0
October 2, 1985
Mumm-Ra creates device that can make Panthro clones. He embeds the spirit of Hammerhand into his clone and sets it free…
Mongor 6.0
October 3, 1985
Wilykit and Kat accidentally free an ancient monster that was banished to an old shrine centuries ago. The evil monster…
Return to Thundera 6.0
October 4, 1985
The Thundercats briefly show Lion-O how the time capsule they recovered from the caveman works. Curious to see more, Li…
Dr. Dometone 6.0
October 7, 1985
An old scientist seeks the Thundercats to help him save the oceans of Third Earth. Long ago, a crack was made in the bo…
The Astral Prison 6.0
October 8, 1985
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 6.0
October 9, 1985
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 w…
Safari Joe 6.0
October 10, 1985
An evil hunter lands on third earth in search of prey to hunt. His holographic machine can tell him about all of the Th…
Snarf Takes Up the Challenge 6.0
October 11, 1985
Nearly all the Thundercats have been captured by the Mutants and imprisoned in Mumm-Ra's Pyramid, forcing Snarf to use …
Sixth Sense 6.0
October 28, 1985
An alien spaceship crash lands on third earth, and it can somehow communicate with Cheetara through her sixth sense. Sh…
The Thunder-Cutter 6.0
October 29, 1985
Mumm-Ra summons the great samurai Hachiman to seek and destroy Lion-O. He tells Hachiman that Lion-O and the Thunderca…
The Wolfrat 6.7
October 30, 1985
MUMM-RA has a phial of miniaturization gas. VULTUREMAN builds a mechanical WOLFRAT to infiltrate the gas into the Cats'…
Feliner (1) 6.0
October 31, 1985
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) 6.0
November 1, 1985
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…
Mandora and the Pirates 6.0
November 4, 1985
Mandora, on space-patrol, encounters an old pirate ship which doesn't meet inter-galactic standards. She boards the sh…
Return of the Driller 6.0
November 5, 1985
The Driller, Mumm-Ra's servant who captured Panthro for him in Spitting Image, returns to aid Mumm-Ra once again. His j…
Dimension Doom 6.0
November 6, 1985
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 6.0
November 7, 1985
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 6.0
November 8, 1985
Mumm-Ra hires Captain Shiner no send a fake distress signal to the Thundercats. With their new vehicle, the Feliner, t…
The Evil Harp of Charr-Nin 6.0
November 11, 1985
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 t…
Lion-O's Anointment First Day: Trial of Strength 6.0
November 12, 1985
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 t…
The Demolisher 6.0
November 13, 1985
A vagabond space traveler lands on Third Earth to challenge Mumm-Ra to a fight. The Demolisher is victorious against M…
Monkian's Bargain 6.0
November 14, 1985
Monkian goes to Mumm-Ra and agrees to give him anything if Mumm-Ra will make him powerful enough to rule Third Earth. …
Tight Squeeze 6.0
November 15, 1985
After the Mutants fail to ambush and defeat the Thundercats with Vultureman's new Thundrainium cannon, Vultureman, furi…
The Micrits 6.0
November 18, 1985
Micrits, a tiny race of human-like figures, happen to live right outside Cats' Lair. Unaware of their existence, Lion-…
Lion-O's Anointment Second Day: The Trial of Speed 6.0
November 19, 1985
On the second day of his trials, Lion-O must race Cheetara through the dangerous lands of Third Earth. Although Cheetar…
The Rock Giant 6.0
November 20, 1985
Mumm-Ra awakens the Rock Giant, an ancient monster made of stone which looked like a mountain to the TCats. When it wak…
Jackalman's Rebellion 6.0
November 21, 1985
The normally submissive JackalMan decides to start his own army in hopes of conquering Third Earth by himself. He does …
Turmagar the Tuska 6.0
November 22, 1985
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 6.0
November 25, 1985
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 infini…
The Mumm-Ra Berbil 6.0
November 26, 1985
Mumm-ra transforms himself into a ro-bear berbil (a Thundercat ally). He acts hurt and the Thundercats let him stay at …
Mechanical Plague 6.0
November 27, 1985
Panthro invents flying video cameras which are suppose to record the events that take place on third-earth so they coul…
Trapped 6.0
November 28, 1985
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 6.0
November 29, 1985
Lion-O undergoes the fourth task in his Anointment Trial.
Excalibur 6.0
December 2, 1985
The story of Excalibur, the greatest sword in history, is revealed to Mumm-Ra, who is then determined to find the Excal…
Secret of the Ice King 6.0
December 3, 1985
A giant Ice King is accidentally released from his glacial prison and attacks the Castle of the Snowmen.
Good and Ugly 6.0
December 4, 1985
A Terator Starship, an extremely ugly spaceship, is pursued by a Kymera Craft, a visually appealing spaceship. The Tera…
The Transfer 6.0
December 5, 1985
A spaceship freighted with a lethal radioactive sphere is on a collision course for Third Earth.
Divide and Conquer 6.0
December 6, 1985
Vultureman invents a voice imitator that imitates the ThunderCats' voices. He uses it to lure the ThunderCats into peri…
Dream Master 6.0
December 9, 1985
Mumm-Ra transforms into Mumm-Ra the Dream Master and summons spectral Dream Selves from the sleeping Panthro, Cheetara,…
Out of Sight 6.0
December 10, 1985
Willa is practicing her long-bow skills when a warning device alerts her to a Mutant attack. Willa is captured and the …
The Mountain 6.0
December 11, 1985
Mumm-Ra summons the Mutants and threatens to banish them from Third Earth unless they bring him the Sword of Omens.
The Superpower Potion 6.0
December 12, 1985
Vultureman invents a Super Power Potion which give him magical powers, enabling him to mesmerize and defeat Tygra.
Eye of the Beholder 6.0
December 13, 1985
Jackalman ambushes Snark and attempts to steal the Sword of Omens. This gives Panthro the idea to make a duplicate swor…
Lion-O's Anointment Final Day: The Trial of Evil 6.0
December 16, 1985
The concluding trial in Lion-O's Anointment Trials pits him alone and weaponless against the evil Mumm-Ra.
The Trouble with ThunderKittens 6.0
December 17, 1985
To prove themselves worthy of being ThunderCats, the ThunderKittens borrow the other ThunderCats' weapons and practice …
Mumm-Rana 6.0
December 18, 1985
The Feliner is attacked by the RatStar, manned by the Mutants. Jackalman, Monikan, and S-S-Slithe are ejected and saved…
The Shifter 6.0
December 19, 1985
Vultureman invents the Shifter, a device that can switch personalities, and uses it on Panthro's personality and Snarf'…
Fond Memories 6.0
December 20, 1985
Mumm-Ra creates a museum where painting and statues come alive to oppose the ThunderCats.