The BEST episodes of ThunderCats Roar
Every episode of ThunderCats Roar ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of ThunderCats Roar!
Staying true to the premise of the original series: Lion-O and the ThunderCats — Tygra, Panthro, Cheetara, Wilykat and Wilykit — barely escape the sudden destruction of their home world, Thundera, only to crash land on the mysterious and exotic planet of Third Earth. Lion-O, the newly appointed Lord of the ThunderCats, attempts to lead the team as they make this planet their new home. A bizarre host of creatures and villains stand in their way, including the evil Mumm-Ra, Third Earth’s wicked ruler who will let nothing, including the ThunderCats, stop his tyrannical reign over the planet.
#1 - Driller
Season 1 - Episode 5 - Aired 3/7/2020
Panthro is getting a little fed up with having to fix things around the Cats' Lair constantly, which is unfortunate because the ThunderCats are about to be attacked by an unstoppable drilling robot, and he's gonna break everything!
#2 - Adopt a Jackal
Season 1 - Episode 20 - Aired 4/25/2020
After a battle with the Mutants, Jackalman gets confused and accidentally returns to the Cats' Lair with the Thundercats.
#3 - Mumm-Ra of Plun-Darr (1)
Season 1 - Episode 27 - Aired 5/23/2020
The Thundercats' worst nightmare comes true when their worst enemies, Mumm-Ra and The Mutants, team up after Mumm-Ra acquires The Sword of Plun-Darr!
#4 - Mumm-Ra of Plun-Darr (2)
Season 1 - Episode 28 - Aired 5/23/2020
Chaos reigns over Third Earth now that the Mutants and Mumm-Ra control the Cats' Lair! The Thundercats' only hope is to sneak back in and get a super secret weapon Panthro has hidden at the heart of the Lair.
#5 - Dr. Dometone
Season 1 - Episode 14 - Aired 4/4/2020
Lion-O is tasked with mapping the beaches of Third Earth, which leads to him somehow draining the oceans of all their water entirely.
#6 - Berserkers
Season 1 - Episode 17 - Aired 4/18/2020
When the Cats' Lair is attacked by gold-loving robot pirates, Lion-O and the ThunderKittens ditch their chores to fight the robo-pirates.
#7 - Prank Call
Season 1 - Episode 4 - Aired 2/29/2020
Lion-O wants to prove to the ThunderKittens that he's not just some boring old adult, like Tygra, even if it means ignoring his instincts and messing with an obviously evil crystal.
#8 - Ratar-O
Season 1 - Episode 23 - Aired 5/9/2020
The ThunderCats have gotten so good at defeating the Mutants of Plun-Darr that it's basically become routine. That all changes with the arrival of the Mutants' old leader: Ratar-O, wielder of the Sword of Plun-Darr! Uh-oh!
#9 - Snarf's Day Off
Season 1 - Episode 26 - Aired 5/16/2020
Snarf leaves the Cats' Lair to get a needed vacation by transforming into a normal cat and hanging out with a nice old lady on a farm! But his relaxing day is threatened.
#10 - Mandora -- The Evil Chaser
Season 1 - Episode 13 - Aired 4/4/2020
Lion-O "accidentally" releases a whole space prison full of criminals and winds up on the wrong side of the law.
#11 - Jaga History
Season 1 - Episode 18 - Aired 4/18/2020
Jaga, the ghost of the ThunderCats' mentor, visits the Cats' Lair after being freed from the Astral Plane and explains why their home world of Thundera exploded.
#12 - Safari Joe
Season 1 - Episode 22 - Aired 5/2/2020
While minding her own business, Cheetara is caught in a trap set by Safari Joe, the famously annoying hunter! After escaping, she rallies the other ThunderCats to help her stop Joe once and for all, by turning the tables and capturing him!
#13 - Lion-S
Season 1 - Episode 25 - Aired 5/16/2020
Lion-O and the other ThunderCats are thrilled to meet a brand new Thunderian: Lion-S! She's cool, good at fighting robots and, most importantly, thinks Lion-O and his Sword of Omens are really neat and interesting! Looks like the ThunderCats have a new best friend! Maybe even, a new ThunderCat?????
#14 - Summer Fun Day!
Season 1 - Episode 21 - Aired 5/2/2020
The Thundercats are exhausted from fighting bad guys all the time so Lion-O suggests they spend a relaxing summer fun day at the beach, with no fighting! Unfortunately the beach is home to the Crabmen, giant, clawed humanoids that fight anyone who steps on their sand! Looks like summer fun day might involve some fighting!
#15 - Secret of the Unicorn
Season 1 - Episode 6 - Aired 3/7/2020
A crying unicorn appears at the Cats' Lair and weepily tells the ThunderCats that all of her unicorn friends have been captured! Tygra thinks he's just the unicorn expert to help the last of the unicorns, he just needs her to stop sobbing long enough to tell him who took her friends. Easier said than done.
#16 - The Legend of Boggy Ben
Season 1 - Episode 3 - Aired 2/29/2020
Lion-O has gotten a hold of the last jar of Thundersnaps, the best cookies Thundera had to offer! But a difficult to open cookie jar is gonna send Lion-O and Cheetara chasing down a legend, a Boggy Ben-related legend.
#17 - The Horror of Hook Mountain
Season 1 - Episode 10 - Aired 3/21/2020
Tygra takes Lion-O climbing up the peak of Hook Mountain to teach him a lesson about trust. But when they get trapped by a snowstorm and take refuge in a creepy cabin owned by the creepy Snowman - it's Tygra's ability to the trust that's gonna be tested.
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#18 - Barbastella
Season 1 - Episode 19 - Aired 4/25/2020
While flying with his new invention, Panthro hits it off with new friend Barbastella, the Queen of the Bats.
#20 - Thunderslobs
Season 1 - Episode 11 - Aired 3/28/2020
Tygra's feeling unappreciated by the other ThunderCats so he starts hanging out with Mumm-Ra and cleaning his Black Pyramid?! Whaaaaaaat?
#21 - Mumm-Ra, The Ever-Living
Season 1 - Episode 16 - Aired 4/11/2020
Every time Mumm-Ra gets ahold of a magic artifact to restore his powers, the ThunderCats just smash it and turn him into a dinky skeleton again. Until today that is, because Mumm-Ra just remembered he's got the Ancient Spirits of Evil on his side.
#22 - Working Grrrl
Season 1 - Episode 12 - Aired 3/28/2020
After losing a race to Monkian over who gets to be leader of a local village, Cheetara becomes a successful business person. However, the other Thundercats discover Monkian cheated by drinking a super-speed potion. Now, with the help of Cheetara's biggest fan, Jan-Jan, they need to dethrone Monkian from his seat of power.
#23 - Exodus (1)
Season 1 - Episode 1 - Aired 2/17/2020
After the destruction of their home planet Thundera, the titular ThunderCats fly off to a new home, only to crash land on Third Earth after being shot down by their arch-enemies, the Mutants. Following a scuffle with the Mutants, Lion-O pursues them into the wild while the rest of the ThunderCats meet the Berbils whose village their ship unknowingly destroyed in the crash. Luckily, the Berbils are quick builders and opt to build their base while warning them of Mumm-Ra. Lion-O ends up encountering Mumm-Ra when chased by the Mutants to the villain's pyramid, with Mumm-Ra destroying the Mutants' ship before returning to his lair.
#24 - Study Time
Season 1 - Episode 15 - Aired 4/11/2020
Lion-O never pays attention during Tygra's training sessions! So when he's asked to do a pop quiz on "sword magic", he accidentally opens a portal to the Astral Plane and releases the Nether Witch on Third Earth.
#25 - Exodus (2)
Season 1 - Episode 2 - Aired 2/28/2020
Lion-O enters the pyramid to thank Mumm-Ra, only to learn he is evil while revealing the presence of the other Thundercats on Third Earth. Mumm-Ra, explaining his Doomstaff grants him power while establishing a curse where anyone who says his name is struck by lightning, chains Lion-O up and uses a portal to attack the ThunderCats' new home. Mumm-Ra makes short work of the team despite their resistance, with Lion-O and Snarf arriving too late. Things seemed hopeless until Mumm-Ra unintentionally praised the Berbils as they hug him with his own curse used against him, enabling the ThunderCats to break free with Lion-O destroying Mumm-Ra's staff. Mumm-Ra, reverted to his natural form, escapes and Lion-O promises to stay with his team and lead them to victory.