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The Best Episodes of ThunderCats

Every episode of ThunderCats ranked from best to worst. Let's dive into the Best Episodes of ThunderCats!

The ThunderCats are on the move! After the kingdom of Thundera is attacked by the lizard people, Lion-O leads Tygra, Cheetara and the other heroes on a quest for the Book of Omens and the magic stones of legend. But he'll have to face villains like Mumm-Ra, the ancient evil sorceror, and Slithe, the dangerous lizard general. Luckily, he has the Sword of Omens and its amazing powers at his disposal.

Genres:AnimationSci-Fi & FantasyAction & Adventure

Top Episode Highlight

The best episode of "ThunderCats" is "Journey to the Tower of Omens", rated 8.4/10 from 108 user votes. It was directed by N/A and written by N/A. "Journey to the Tower of Omens" aired on 8/26/2011 and is rated 0.0 point(s) higher than the second highest rated, "New Alliances".

  • Journey to the Tower of Omens
    8.4/10 108 votes

    #1 - Journey to the Tower of Omens

    Season 1 Episode 6 - Aired 2011-08-26

    The ThunderCats continue their quest for the Book of Omens, which leads them to the fabled Tower of Omens. However, they will first have to get past a series of deadly traps in order to reach it. Meanwhile, Mumm-Ra grows tired of waiting and forces Jaga to reveal the Book's location, and plans to go there himself to take it at all costs.

    Director: N/A

    Writer: N/A

  • New Alliances
    8.4/10 95 votes

    #2 - New Alliances

    Season 1 Episode 14 - Aired 2012-03-24

    The ThunderCats go on the offensive, but Mumm-Ra won't see his lizard army crushed so easily. He tasks Slithe with recruiting two new and vicious Generals.

    Director: N/A

    Writer: N/A

  • Native Son
    8.3/10 72 votes

    #3 - Native Son

    Season 1 Episode 17 - Aired 2012-04-14

    While traveling through snowy mountains in search of safe passage, Tygra and Lion-O come upon a lost tiger village and in it they find Tygra's real father. Tygra learns why his father sent him away as a baby — to save his life. But all is not as it seems in this village as the brothers learn these tigers are cursed and Tygra may be the answer to saving them — but at the cost of his own life.

    Director: N/A

    Writer: N/A

  • Into the Astral Plane
    8.2/10 83 votes

    #4 - Into the Astral Plane

    Season 1 Episode 12 - Aired 2011-11-18

    The Cats are ready to retrieve the stone from the "Astral Plane" in the Elephant Village, but find it overtaken by Grunea and Mumm-Ra's forces. Plus, Tygra and Cheetara's early relationship to one another is revealed.

    Director: N/A

    Writer: N/A

  • Between Brothers
    8.2/10 92 votes

    #5 - Between Brothers

    Season 1 Episode 13 - Aired 2011-11-25

    Tygra and Lion-O enter the Astral Plane to retrieve the stone, but encounter Mumm-Ra in the process. Grune and Panthro have their final duel. Cheetara finally chooses her beau.

    Director: N/A

    Writer: Paul Giacoppo

  • Old Friends
    8.1/10 112 votes

    #6 - Old Friends

    Season 1 Episode 5 - Aired 2011-08-19

    The ThunderCats accompany Panthro to Cloud Peak Mine to search for Thundrilium for the Thundertank. Along the way, Panthro and Grune's past is explored, from their first encounter to the reason behind Grune's betrayal.

    Director: N/A

    Writer: N/A

  • What Lies Above (1)
    8.1/10 88 votes

    #7 - What Lies Above (1)

    Season 1 Episode 25 - Aired 2012-06-09

    The ThunderCats' search for the Tech Stone leads them high above Thundera to the floating bird city of Avista, where the stone is the power source for their city.

    Director: N/A

    Writer: N/A

  • Omens, Part 2 (Ancient Spirits of Evil)
    8.0/10 156 votes

    #8 - Omens, Part 2 (Ancient Spirits of Evil)

    Season 1 Episode 2 - Aired 2011-07-29

    An unforeseen betrayal by a former comrade brings destruction upon the Cat Kingdom. While King Claudus leads the fight against General Slithe and his lizard army, the evil sorcerer Mumm-Ra attempts to seize the Sword of Omens.

    Director: N/A

    Writer: N/A

  • Song of the Petalars
    8.0/10 170 votes

    #9 - Song of the Petalars

    Season 1 Episode 4 - Aired 2011-08-12

    While traveling through the woods, the ThunderCats come across a group of Petalars - small plant-like creatures whose lifespans are only one day. Lion-O befriends the young Emrick as he and the others try to figure out a way out of the woods and return the Petalars to their home. Meanwhile, Slithe and his lizard army are hot on the ThunderCats' trail to eliminate them.

    Director: N/A

    Writer: N/A

  • The Duelist and the Drifter
    8.0/10 126 votes

    #10 - The Duelist and the Drifter

    Season 1 Episode 8 - Aired 2011-09-09

    As Tygra and Panthro work on the ThunderTank, Lion-O is searching for supplies and encounters a mysterious Drifter who helps teach a few important lessons. After showing off The Sword of Omens in town, Lion-O is challenged by a man known as The Duelist and must overcome himself in order to win.

    Director: N/A

    Writer: N/A

  • The Trials of Lion-O (1)
    8.0/10 76 votes

    #11 - The Trials of Lion-O (1)

    Season 1 Episode 15 - Aired 2012-03-31

    During an ambush, Lion-O falls to his death, but he is given a second chance at life - if he can pass a series of trials that pit him against each of his teammates.

    Director: N/A

    Writer: N/A

  • The Trials of Lion-O (2)
    8.0/10 73 votes

    #12 - The Trials of Lion-O (2)

    Season 1 Episode 16 - Aired 2012-04-07

    Pleading for a chance to save his friends, Jaga grants Lion-O life until sunrise to try and save his friends ... and stop Mumm-Ra.

    Director: N/A

    Writer: N/A

  • Birth of the Blades
    8.0/10 90 votes

    #13 - Birth of the Blades

    Season 1 Episode 21 - Aired 2012-05-12

    Mumm-Ra arrives at Mount Plun-Darr and battles the Thundercats in an attempt to regain the Sword of Plun-Darr.

    Director: N/A

    Writer: N/A

  • The Soul Sever
    8.0/10 59 votes

    #14 - The Soul Sever

    Season 1 Episode 24 - Aired 2012-06-02

    While trying to uncover the location of the next stone, the ThunderCats cross paths with a mad man, Soul Sever, who is trying to insert the souls of his long-lost family into machines.

    Director: N/A

    Writer: N/A

  • What Lies Above (2)
    8.0/10 86 votes

    #15 - What Lies Above (2)

    Season 1 Episode 26 - Aired 2012-06-16

    In the season finale, Mumm-Ra's forces find the ThunderCats and the Tech Stone in Avista City. An incredible battle ensues for the stone as Lion-O finds himself betrayed by a trusted ally.

    Director: N/A

    Writer: N/A

  • Omens, Part 1 (The Sword of Omens)
    7.9/10 195 votes

    #16 - Omens, Part 1 (The Sword of Omens)

    Season 1 Episode 1 - Aired 2011-07-29

    Lion-O, always outdone by his adoptive older brother Tygra, undergoes the ritual to be chosen by the Sword of Omens as the next king of Thundera. His father, Claudus, does not feel his son is ready because he is too lenient and easily distracted by flights of fancy like the myth of ancient technology. Soon after, King Claudus welcomes the return of his friend Grune and holds a celebration in both his honor and in memory of the fallen Panthro. During the event, Lion-O defends a pair of captured Lizards and convinces his father to release them.

    Director: N/A

    Writer: N/A

  • Legacy
    7.9/10 122 votes

    #17 - Legacy

    Season 1 Episode 7 - Aired 2011-09-02

    Lion-O ventures into the Book of Omens where he becomes the incarnation of his renowned ancestor, the valiant Leo, who led the rebellion against Mumm-Ra in a previous millennium.

    Director: N/A

    Writer: N/A

  • The Forest of Magi Oar
    7.9/10 86 votes

    #18 - The Forest of Magi Oar

    Season 1 Episode 11 - Aired 2011-11-11

    Sent by the Elephants to the Forest of Magi Oar, Lion-O must learn to master Sight Beyond Sight before returning to the Elephant Village. The Cats encounter a group of paper warriors with a dark secret.

    Director: N/A

    Writer: N/A

  • Curse of Ratilla
    7.9/10 91 votes

    #19 - Curse of Ratilla

    Season 1 Episode 20 - Aired 2012-05-05

    Arriving at Mount Plun-Darr, the ThunderCats and Pumyra discover that the Thunderian slaves are being forced to excavate the Sword of Plun-Darr for Ratar-O and his Rats.

    Director: N/A

    Writer: N/A

  • The Pit
    7.8/10 94 votes

    #20 - The Pit

    Season 1 Episode 19 - Aired 2012-04-28

    The Thundercats discover a cat refugee, Pumyra, being forced to fight as a gladiator in a city of Dogs.

    Director: N/A

    Writer: N/A

  • Recipe for Disaster
    7.8/10 86 votes

    #21 - Recipe for Disaster

    Season 1 Episode 23 - Aired 2012-05-26

    The Thundercats require the assistance of a snake oil salesman named Ponzie to defeat Mumm-ra’s latest monstrous form.

    Director: N/A

    Writer: N/A

  • Survival of the Fittest
    7.7/10 66 votes

    #22 - Survival of the Fittest

    Season 1 Episode 18 - Aired 2012-04-21

    While Lion-O and Tygra were off with the tiger clan adventure, the rest of the crew is keeping an eye on the Thundertank. The twins are looking for some stashed food, but it appears Snarf beat them to the goodies. Panthro and Cheetara decide to use this as an opportunity to teach these two how to survive on their own.

    Director: N/A

    Writer: N/A

  • Berbils
    7.6/10 92 votes

    #23 - Berbils

    Season 1 Episode 9 - Aired 2011-10-28

    The ThunderCats meet the mysterious beings who had helped them during the night and they turn out to be the Berbils, or Ro-Bears. The Berbils treat the ThunderCats with great hospitality until the village is attacked and some of the Berbils are captured. The ThunderCats help their new friends and a battle for freedom ensues.

    Director: N/A

    Writer: N/A

  • The Forever Bag
    7.6/10 59 votes

    #24 - The Forever Bag

    Season 1 Episode 22 - Aired 2012-05-19

    Seduced by the fun-loving lifestyle of Tookit and the orphans they meet, WilyKit and WilyKat are tricked by Tookit into becoming thieves again.

    Director: N/A

    Writer: N/A

  • Sight Beyond Sight
    7.4/10 85 votes

    #25 - Sight Beyond Sight

    Season 1 Episode 10 - Aired 2011-11-04

    The Cats track the location of the first stone to the mystical Elephant Village, but Lion-O can't find the specific location and the forgetful Elephants no longer remember where it is.

    Director: N/A

    Writer: N/A