ThunderCats Roar

Season 1

TV-Y7

19%

This Cartoon Network series centers around Lion-O and his wacky misadventures, as he tries to defeat the evil Mumm-Ra.

Where to Watch Season 1

52 Episodes

Exodus (1)
E1
Exodus (1)Fleeing the destruction of their home planet Thundera, Lion-O and the ThunderCats land on the world of Third Earth. But their enemies, the Mutants of Plun-Darr have followed them and it turns out Third Earth already has a Mumm-Ra problem.
Exodus (2)
E2
Exodus (2)Fleeing the destruction of their home planet Thundera, Lion-O and the ThunderCats land on the mysterious, dangerous, all-around awesome world of Third Earth! But their enemies, the Mutants of Plun-Darr have followed them and it turns out Third Earth already has a Mumm-Ra problem - can Lion-O learn the ropes of being a leader in time?
The Legend of Boggy Ben
E3
The Legend of Boggy BenLion-O has gotten ahold of the last jar of Thundersnaps - the best cookies Thundera had to offer! But a difficult to open cookie jar sends Lion-O and Cheetara chasing down the legend of Boggy Ben.
Prank Call
E4
Prank CallLion-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.
Driller
E5
DrillerPanthro becomes fed up with having to constantly fix things around the Cats' Lair, which proves to be a problem when an unstoppable drilling robot plans an attack.
Secret of the Unicorn
E6
Secret of the UnicornA crying unicorn appears at the Cats' Lair and 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.
Panthro Plagiarized!
E7
Panthro Plagiarized!Vultureman has got a brand new invention but there's one big problem: he stole the idea from Panthro! Oh, also Vultureman is using his invention to take over Third Earth. So, there are two big problems.
Warrior Maiden Invasion
E8
Warrior Maiden InvasionThird Earth is being overrun by super tough, super buff Warrior Maidens and it looks like the ThunderCats are next on their hit list! It's gonna be up to the ThunderKittens to save the day even though the kittens are so small and the Warrior Maidens are so big.
Lost Sword
E9
Lost SwordBarely escaping the sudden destruction of their home world, Thundera, Lion-O and the ThunderCats crash land on the mysterious and exotic planet of Third Earth, home to the evil Mumm-Ra and a bizarre host of other creatures and villains.
The Horror Of Hook Mountain
E10
The Horror Of Hook MountainBarely escaping the sudden destruction of their home world, Thundera, Lion-O and the ThunderCats crash land on the mysterious and exotic planet of Third Earth, home to the evil Mumm-Ra and a bizarre host of other creatures and villains.
ThunderSlobs
E11
ThunderSlobsFeeling underappreciated by the other ThunderCats, Tygra starts hanging out with Mumm-Ra and cleaning his black pyramid. Whaaaat?
Working Grrrl
E12
Working GrrrlCheetara is the fastest living being in the universe, until Monkian beats her in a race! Now Cheetara has to find something else to be the best at, while the rest of the ThunderCats find out how Monkian got so darn fast!
Mandora: The Evil Chaser
E13
Mandora: The Evil ChaserLion-O "accidentally" releases a whole space prison-full of space criminals and winds up on the wrong side of the law. On the right side of the law is Mandora the Evil Chaser, a no nonsense space cop. Lion-O's gonna have to work real hard to prove he's not a criminal, just a little bit of an oaf.
Dr. Dometone
E14
Dr. DometoneLion-O is tasked with mapping the beaches of Third Earth, which leads to him somehow draining the oceans of all water entirely. Woops. But a mysterious scientist with a robotic frog says they can fix everything by traveling under the earth, which is just the kinda crazy adventure Lion-O is all about.
Study Time
E15
Study TimeLion-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. The Witch imprisons Lion-O and Tygra in her nightmare realm and it's gonna take a lot of studying to figure out a way home. Wonder if the Astral Plane has any great teachers lying around.
Mumm-Ra: The Ever Living
E16
Mumm-Ra: The Ever LivingEvery time Mumm-Ra gets a hold 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, and now he can get swole whenever he wants.
Berserkers
E17
BerserkersThe Cats' Lair is attacked by gold-loving robot pirates, the Berserkers. This is a good thing, really, since it means Lion-O and the ThunderKittens can ditch their chores and fight robo-pirates instead. Just don't tell Tygra!!!
Jaga History
E18
Jaga HistoryFreed from the Astral Plane, Jaga, ghost of the ThunderCats mentor, is now free to visit the Cats' Lair. Which means he can finally tell them why Thundera, their home world, exploded. It's story time.
Barbastella
E19
BarbastellaWhile flying with his new invention, Panthro hits it off with a new friend, Barbastella, the Queen of the Bats. Now Panthro needs help getting ready for his big date with her, because it turns out Panthro is terrified of bats. Lion-O and Cheetara are happy to help but, wow, that is a lot to unpack.
Adopt a Jackal
E20
Adopt a JackalAfter a battle with the Mutants, Jackalman gets confused and accidentally returns to the Cats' Lair with the Thundercats, he is the dumbest mutant. Jackalman pretends to be a Thundercat so his enemies won't catch him and the Thundercats pretend to play along because they feel bad for him.
Summer Fun Day
E21
Summer Fun DayThe 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.
Safari Joe
E22
Safari JoeWhile 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.
Ratar-O
E23
Ratar-OThe 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.
Prince Starling's Quest
E24
Prince Starling's QuestLion-O is happily playing with Snarf in their "Frolicking Field" and doesn't have a care in the world, unfortunately he's accidentally stomping all over the miniature village of the Micrits. The tiny people want to defeat the "giant orange monster" but such a quest would require a brave hero. Luckily, the Micrits have such a hero: Prince Starling. Now, let us the tell you the epic tale of Prince Starling as he journeys to find the fountain of growth and defeat the wicked Lion-O, who has no idea any of this is going on.
Lion-S
E25
Lion-SLion-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?????
Snarf's Day Off
E26
Snarf's Day OffHey everyone, it's Snarf's monthly day off. That's right, 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 when Snarf and the nice old lady cross paths with Mumm-Ra.
Mumm-Ra of Plun-Darr Part 1
E27
Mumm-Ra of Plun-Darr Part 1The 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.
Mumm-Ra of Plun-Darr Part 2
E28
Mumm-Ra of Plun-Darr Part 2Chaos 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.
Mandora's Law
E29
Mandora's LawTygra creates a bunch of new laws for Third Earth so Mandora can finally arrest the Mutants. Unfortunately, the ThunderCats are really bad at following their own rules and the Mutants are really good at working around them.
Thunder Road
E30
Thunder RoadWhen a crate containing fifty Swords of Omen lands on Third Earth, the ThunderCats rush out in the ThunderTank to find then. Unfortunately, The Mutants and Mumm-Ra want the swords too so it's going to a race to get to them! A wacky race, you might say. We won't say that, but you might.
Corporate Buyout
E31
Corporate BuyoutThe Cheetara Corp Employee Retreat gets canceled when Baron Karnon, a mysterious corporate raider, buys them out! Now Cheetara and Jan-Jan must brave the wilds of Third Earth's most dangerous jungles to find the Baron's office and demand a meeting with the man who stole their company!
Hachiman
E32
HachimanWhile on a super important mission to get batteries for the TV remote Lion-O meets Hachiman, a cool Samurai warrior. Now Lion-O will do anything to prove he's just as cool as Hachiman, even if it means risking his own life!
Schnorp
E33
SchnorpThe Thunderkittens plug a new video game cartridge into Snarf only to learn that it didn't load a game, it loaded a whole new personality into their pal! Meet Schnorp, a kind Swedish man who loves the beauty of nature and collecting berries! Schnorp is loads of fun, but we're gonna want Snarf back, right?
Berb-cules
E34
Berb-culesWhen the ThunderCats tell the Berbils to stop building things for the Mutants, they build a giant Berbil named Berb-cules, who takes back everything they ever built.
Pumm-Ra
E35
Pumm-RaMumm-Ra plans to disguise himself as a Thunderian and infiltrate Cats' Lair, but the Ancient Spirits of Evil are mad at him and won't give him any magic today. No matter, Mumm-Ra knows what a ThunderCat looks like so he slaps on some awful, unconvincing, cat make up and heads to Cats' Lair to introduce himself!
King of the Machines
E36
King of the MachinesBarbastella reunites with her ex-girlfriend, the elitist Queen of the Rats. A jealous Panthro installs AI into all the Lair's appliances, to become King of the Machines.
Sword Heist
E37
Sword HeistWhen a local sword shop sells an ultra-powerful sword to Ratar-O, Lion-O decides he has to steal it before Ratar-O can come pick it up. Unfortunately, Lion-O is completely against stealing, but luckily, he knows someone who loves to steal... Lion-S!
Claudus
E38
ClaudusLion-O's dad King Claudus arrives on Third Earth, and turns out to be a big selfish jerk! Now Lion-O has to deal with his dad before he goes to war with the rest of the Thundercats.
Telethon
E39
TelethonIn order to save the Berbils, Cheetara uses her psychic powers to project a telethon into the brains of everyone on Third Earth.
Mall-Ra
E40
Mall-RaMumm-Ra builds a mall that's actually a giant labyrinth designed to trap the Thundercats forever. Too bad the Thundercats love the mall so much they could literally spend all eternity there.
Eclipsorr
E41
EclipsorrThird Earth's sun is being blocked out by the Eclipsor Corporation, an amoral company that wants to sell its energy for a profit. The ThunderCats can't do anything about it because they don't have a spaceship, yet!
Wizz-Ra
E42
Wizz-RaThe ThunderCats freak out when a spooky ghost dressed like a pharaoh appears in their mirrors! They quickly set about to getting rid of every reflective surface in their lair because that ghost is scary and no one wants to talk to him!
ThunderDogs
E43
ThunderDogsThe Thundercats agree to foster a demonic puppy from the Astral Plane until they can find it the perfect owner. But could the perfect owner be their worst enemy? Their worst enemy is Mumm-Ra in case you forgot!
Mini Mongor
E44
Mini MongorThe Thunderkittens unleash a demon who is powered by fear. Too bad he's small and not that scary.
Swampy Johnny
E45
Swampy JohnnyThe Thundercats invite a super cool swamp man into the Cat's Lair who is on the run from some scary looking aliens.
Tygra's Garden
E46
Tygra's GardenTygra says he's done being a Thundercat after he gets engaged to a sentient flower. Now it's up to Lion-O to break up the wedding!
The Spacebeam
E47
The Spacebeam
Plundsmas
E48
PlundsmasThe Mutants refuse to celebrate their favorite holiday, Plunds-Mas, now that Plun-Darr is gone. So now it's up to the Thundercats to raise their spirits by enacting the eight horrors of Plunds-Mas!
Killing Time
E49
Killing TimeMumm-Ra, the Ever-Living decides he'll nap for a thousand years, till the Thundercats are long gone. But when he wakes up, he's shocked to discover that Third Earth is even more in love with them than ever.
Grune
E50
GruneThe ThunderCats face the greatest threat of their lives: Grune the Destroyer! He's the ghost of an evil ThunderCat and he wants revenge! HOW ARE THEY GONNA BEAT GRUNE??? You'll have to watch the episode!
The First Thundsgiving
E51
The First ThundsgivingTygra is furious after the other Thundercats eat the last of his Thunderian ingredients. To make it up to him they go hunting for substitutes on Third Earth to show him the food on their new planet is just as delicious as the food they had back on their old home.
Mandora Saves Christmas
E52
Mandora Saves ChristmasSanta Claus is on the run from Mandora! Can the Thundercats help him get off Third Earth without getting caught? And can Santa Claus teach them a little something about this weird new holiday "Christmas"?