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The Best Episodes of ThunderCats Season 1

Every episode of ThunderCats Season 1 ranked from best to worst. Discover the Best Episodes of ThunderCats Season 1!

Binge this in 9h 10m•Peaking at 8.2/10

The inhabitants of the planet Thundera evacuate just before it is destroyed. They were pursued by a band of mutants. All but one of their escape ships was destroyed. Only a small group of Thunderians

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Episode Rankings

  1. #1 Fan Favorite
    ThunderCats Season 1 Episode 61 - Lion-O's Anointment Final Day: The Trial of Evil
    8.2/10(219 votes)

    S1:E61

    The concluding trial in Lion-O's Anointment Trials pits him alone and weaponless against the evil Mumm-Ra.

    Director:Unknown
    Writer:Leonard Starr

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  2. ThunderCats Season 1 Episode 42 - Lion-O's Anointment Second Day: The Trial of Speed
    8.1/10(234 votes)

    S1:E42

    On the second day of his trials, Lion-O must race Cheetara through the dangerous lands of Third Earth. Although Cheetara is by far the fastest among the Thundercats, her speed can only last for a short time period. Lion-O takes a shorter but more dangerous route to make up for Cheetara's advantage.

    Director:Unknown
    Writer:Leonard Starr

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  3. ThunderCats Season 1 Episode 20 - Return to Thundera
    8.0/10(247 votes)

    S1:E20

    The Thundercats briefly show Lion-O how the time capsule they recovered from the caveman works. Curious to see more, Lion-O activates it during his night-time watch, and gets caught in its projection rays. The rays send him back in time to Thundera, just before the final tremor that destroyed the planet. Meanwhile, the Mutants have built an evil robot monster that is destroying Cats' Lair. Back on Thundera, Lion-O encounters his father, Claudus, and saves him from a Mutant attack. In return, Claudus gives Lion-O the plans to the robot that was attacking the Thundercats in his own time.

    Director:Unknown
    Writer:Bob Haney

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  4. ThunderCats Season 1 Episode 37 - Lion-O's Anointment First Day: Trial of Strength
    8.0/10(228 votes)

    S1:E37

    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 the hereditary Lord of the ThunderCats, he must prove himself to be worthy of that title. His first test is to beat Panthro in a duel to test his strength.

    Director:Unknown
    Writer:Leonard Starr

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  5. ThunderCats Season 1 Episode 11 - The Ghost Warrior
    7.9/10(282 votes)

    S1:E11

    Two Bolkins (sheep-like beings from Third Earth) unleash the ghost of Grune the Destroyer, a renegade Thundercat who once terrorised Third Earth and now turns his attention to the Thundercats.

    Director:Unknown
    Writer:Leonard Starr

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  6. ThunderCats Season 1 Episode 24 - Safari Joe
    7.9/10(237 votes)

    S1:E24

    An evil hunter lands on third earth in search of prey to hunt. His holographic machine can tell him about all of the Thundercats, including their strengths and weaknesses, and he is able to hunt down each one of them and put them in Thundrainium cells. He captures all of them but Lion-O and Snarf. Jaga warns Lion-O about Safari Joe before he sets out to save his comrades, and Lion-O is able to defeat him and release his friends.

    Director:Unknown
    Writer:Steve Perry

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  7. ThunderCats Season 1 Episode 50 - Lion-O's Anointment Fourth Day: The Trial of Mind Power
    7.9/10(225 votes)

    S1:E50

    Lion-O undergoes the fourth task in his Anointment Trial.

    Director:Unknown
    Writer:Leonard Starr

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  8. ThunderCats Season 1 Episode 51 - Excalibur
    7.9/10(230 votes)

    S1:E51

    The story of Excalibur, the greatest sword in history, is revealed to Mumm-Ra, who is then determined to find the Excalibur and defeat Lion-O and the Sword of Omens.

    Director:Unknown
    Writer:Peter Lawrence

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  9. ThunderCats Season 1 Episode 25 - Snarf Takes Up the Challenge
    7.8/10(227 votes)

    S1:E25

    Nearly all the Thundercats have been captured by the Mutants and imprisoned in Mumm-Ra's Pyramid, forcing Snarf to use his own talents to free them.

    Director:Unknown
    Writer:Peter Lawrence

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  10. ThunderCats Season 1 Episode 46 - Lion-O's Anointment Third Day: Trial of Cunning
    7.8/10(222 votes)

    S1:E46

    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 infinity. Attempting to stop Lion-O and slow him down, the kids set traps in the maze. He manages however to avoid their traps. In order to beat them through the maze, Lion-O plays their own tricks on them, and tricks them into losing the race through the maze.

    Director:Unknown
    Writer:Leonard Starr

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  11. ThunderCats Season 1 Episode 7 - Trouble with Time
    7.7/10(283 votes)

    S1:E7

    With their supply of Thundrillium running low, the Thundercats set off in search of a fresh supply. Tygra detects a large deposit in a cave and goes to investigate - unfortunately, he has entered the Cave of Time and anyone who ventures in there will age rapidly until they die. His only hope is that Cheetara's speed will be fast enough to allow her to escape the Cave's effects.

    Director:Unknown
    Writers:Ron Goulart, Jules Bass

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  12. ThunderCats Season 1 Episode 13 - Lord of the Snows
    7.7/10(251 votes)

    S1:E13

    When a meteorite made of pure Thundrillium crashes on Hook Mountain, the Thundercats decide to use it to replenish their depleted energy supply. But Lion-O must first gain the trust of the fierce Snowman.

    Director:Unknown
    Writer:Bob Haney

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  13. ThunderCats Season 1 Episode 17 - All That Glitters
    7.7/10(240 votes)

    S1:E17

    Mumm-Ra tricks Lion-O into using the Sword of Omens against Tygra, causing the blade to break in half and lose its powers. The only way Lion-O can restore the Sword is to venture into a volcano and have the Inflamer reforge it. But the Inflamer requires a payment of gold... Has Lion-O taken on more than he can handle?

    Director:Unknown
    Writer:Bob Haney

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  14. ThunderCats Season 1 Episode 18 - Spitting Image
    7.7/10(241 votes)

    S1:E18

    Mumm-Ra creates device that can make Panthro clones. He embeds the spirit of Hammerhand into his clone and sets it free to destroy Third Earth. The Third Earth inhabitants blame the Thundercats for the terror because they think its the real Panthro destroying their villages and burning their crops. The real Panthro finally encounters his clone and, with the help of Lion-O, manages to destroy it. Enraged about his defeat, Hammerhand destroys Mumm-Ra's cloning device.

    Director:Unknown
    Writer:Howard Post

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  15. ThunderCats Season 1 Episode 29 - Feliner (1)
    7.7/10(219 votes)

    S1:E29

    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 Thundercats. Snarf, thinking his entire race was wiped out when Thundera blew up, finds out that they have captured Snarfer, his little nephew. The Thundercats set out to find the Mutants and save Snarfer. After successfully saving Snarfer, the Thundercats are faced with the problem of returning Snarfer to his planet. Panthro cleverly invents the Feliner, a spaceship. In order for it to work, though, the machine need a hyperspace mega-condenser. Snarf reminds him that there is one on Ratar-O's Ratstar. The Thundercats once again pursue the Mutants to the wreckage site of the Ratstar to take their mega-condenser.

    Director:Unknown
    Writer:Steve Perry

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  16. ThunderCats Season 1 Episode 47 - The Mumm-Ra Berbil
    7.7/10(214 votes)

    S1:E47

    Mumm-ra transforms himself into a ro-bear berbil (a Thundercat ally). He acts hurt and the Thundercats let him stay at Cats Lair. One night, Mumm-ra(the berbil) puts all the Thundercats under his spell, except Snarf, because Tygra held off Mumm-ra just long enough for Snarf to escape. Lion-O was sleeping out in the woods, and Snarf ran to him and told him what happened. Lion-O came back and fought Mumm-ra, who was actually beating Lion-O. Mumm-ra was wearing special glasses so he couldn't see his reflection. Eventually, Lion-O used the Thundercat signal, broke Mumm-ra's spell and his glasses, and finally defeated him with his reflection.

    Director:Unknown
    Writer:Jeri Craden

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  17. ThunderCats Season 1 Episode 57 - Out of Sight
    7.7/10(213 votes)

    S1:E57

    Willa is practicing her long-bow skills when a warning device alerts her to a Mutant attack. Willa is captured and the ThunderCats rush to rescue her.

    Director:Unknown
    Writer:Chris Trengove

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  18. ThunderCats Season 1 Episode 58 - The Mountain
    7.7/10(210 votes)

    S1:E58

    Mumm-Ra summons the Mutants and threatens to banish them from Third Earth unless they bring him the Sword of Omens.

    Director:Unknown
    Writer:Danny Peary

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  19. ThunderCats Season 1 Episode 1 - Exodus
    7.6/10(474 votes)

    S1:E1

    With their home planet, Thundera, about to explode, the Thunderians flee to a distant galaxy. Before they can make the long journey the Mutants sweep in and destroy most of the fleet in an attempt to capture the Eye of Thundera. Due to the attack, the Thundercats find themselves on a distant planet. A grown-up Lion-O must save his Thundercats from the Mutants on Third Earth.

    Director:Unknown
    Writer:Leonard Starr

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  20. ThunderCats Season 1 Episode 5 - Pumm-Ra
    7.6/10(301 votes)

    S1:E5

    Mumm-Ra uses his shapeshifting abilities to pass himself off as a Thunderian so he can stage the "rescue" of Cheetara and infiltrate Cats' Lair.

    Director:Unknown
    Writer:Jules Bass

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  21. ThunderCats Season 1 Episode 26 - Sixth Sense
    7.6/10(232 votes)

    S1:E26

    An alien spaceship crash lands on third earth, and it can somehow communicate with Cheetara through her sixth sense. She becomes a part of the spacecraft, and begins to feel what it feels. The Mutants recover the space ship, and begin tampering with it. Little do they know that it is not only affecting the spaceship, but it is affecting Cheetara. In order to save Cheetara, the Thundercats set out to recover the space ship from the Mutants and fix it.

    Director:Unknown
    Writer:Peter Lawrence

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  22. ThunderCats Season 1 Episode 30 - Feliner (2)
    7.6/10(219 votes)

    S1:E30

    The ThunderCats race to try to salvage the part they need for the Feliner from the wreck of the Rat Star before the Mutants can complete repairs. Snarf contemplates leaving the ThunderCats forever.

    Director:Unknown
    Writer:Steve Perry

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  23. ThunderCats Season 1 Episode 32 - Return of the Driller
    7.6/10(216 votes)

    S1:E32

    The Driller, Mumm-Ra's servant who captured Panthro for him in Spitting Image, returns to aid Mumm-Ra once again. His job this time is to drill a hole from the Cats' Lair to the Acid lake, allowing the acid to flow in and eat away at the lair. The Thundercats set out to find the one substance that neutralizes the acid.

    Director:Unknown
    Writer:Howard Post

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  24. ThunderCats Season 1 Episode 33 - Dimension Doom
    7.6/10(224 votes)

    S1:E33

    Wiz-Ra, Mumm-Ra's enemy from long ago, comes back every 7000 years through a portal that just happens to be in Cheetara's bedroom. Wiz-Ra wears a magical helmet that lets him control minds. When the time arrives and Wiz-Ra comes through the portal, Mumm-Ra steals the helmet. Cheetara helps Wiz-Ra get the helmet back and free the ThunderCats from its spell.

    Director:Unknown
    Writer:Bob Haney

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  25. ThunderCats Season 1 Episode 53 - Good and Ugly
    7.6/10(206 votes)

    S1:E53

    A Terator Starship, an extremely ugly spaceship, is pursued by a Kymera Craft, a visually appealing spaceship. The Terator Spaceship escapes and lands at the Cats' Lair

    Director:Unknown
    Writer:Peter Lawrence

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Season 1 Ratings Summary

"Lion-O's Anointment Final Day: The Trial of Evil" is the best rated episode of "ThunderCats" season 1. It scored 8.2/10 based on 219 votes. Directed by Unknown and written by Leonard Starr, it aired on 12/16/1985. This episode is rated 0.1 points higher than the second-best, "Lion-O's Anointment Second Day: The Trial of Speed".