1. The Sword of Omens
Aired: Jul 29, 2011 Lion-O, always outdone by his adoptive older brother Tygra, undergoes the rit...
2. Ancient Spirits of Evil
Aired: Jul 29, 2011 Thundera is attacked by lizards who have acquired salvaged ancient technology...
3. Ramlak Rising
Aired: Aug 5, 2011 After escaping their destroyed city, the team encounters the Fishmen. The Thu...
4. Song of the Petalars
Aired: Aug 12, 2011 While hiding from the unstoppable lizard army, Lion-O encounters a race of cr...
5. Old Friends
Aired: Aug 19, 2011 Panthro finally joins the team, but his gruff demeanor intimidates Lion-O. De...
6. Journey to the Tower of Omens
Aired: Aug 26, 2011 The Cats must pass a series of obstacles in order to finally get the Book of ...
7. Legacy
Aired: Sep 2, 2011 Lion-O ventures into the Book of Omens where he becomes the incarnation of hi...
8. The Duelist and the Drifter
Aired: Sep 9, 2011 While traveling, Lion-O's cockiness loses him the Sword of Omens to the Dueli...
9. Berbils
Aired: Oct 28, 2011 Tiny robot bears solicit the help of the ThunderCats to save them from a slav...
10. Sight Beyond Sight
Aired: Nov 4, 2011 The Cats track the first stone's location to the mystical Elephant Village, b...
11. Forest of Magi Oar
Aired: Nov 11, 2011 Sent by the Elephants to the Forest of Magi Oar, Lion-O must learn to master ...
12. Into the Astral Plane
Aired: Nov 18, 2011 The Cats are ready to retrieve the stone from the "Astral Plane" in the Eleph...
13. Between Brothers
Aired: Nov 25, 2011 Tygra and Lion-O enter the Astral Plane to retrieve the stone, but encounter ...
14. New Alliances
Aired: Mar 24, 2012 The ThunderCats go on the offensive, but Mumm-Ra won't see his lizard army cr...
15. Trials of Lion-O: Part-1
Aired: Mar 31, 2012 During an ambush, Lion-O falls to his death, but he is given a second chance ...
16. Trials of Lion-O: Part-2
Aired: Apr 7, 2012 Pleading for a chance to save his friends, Jaga grants Lion-O life until sunr...
17. Native Son
Aired: Apr 14, 2012 Tygra and Lion-O come upon a lost tiger village and in it they find Tygra's r...
18. Survival of the Fittest
Aired: Apr 21, 2012 Wilykit and Wilykat are forced to hunt for their food, but something is hunti...
19. The Pit
Aired: Apr 28, 2012 The Thundercats discover a cat refugee, Pumyra, being forced to fight as a gl...
20. Curse of Ratilla
Aired: May 5, 2012 The ThunderCats must infiltrate the mines of Mount Plundarr where Ratar-O is ...
21. Birth of the Blades
Aired: May 12, 2012 As Lion-O and Pumyra try to evade Mumm-Ra and his forces in the mines of Moun...
22. The Forever Bag
Aired: May 19, 2012 Seduced by the fun-loving lifestyle of Tookit and the orphans they meet, Wily...
23. Recipe for Disaster
Aired: May 26, 2012 When Mumm-Ra unleashes the deadly Sycorax, the ThunderCats turn to an unlikel...
24. The Soul Sever
Aired: Jun 2, 2012 While trying to uncover the location of the next stone, the ThunderCats cross...
25. What Lies Above: Part One
Aired: Jun 9, 2012 The ThunderCats' search for the Tech Stone leads them high above Thundera to ...
26. What Lies Above: Part Two
Aired: Jun 16, 2012 In the season finale, Mumm-Ra's forces find the ThunderCats and the Tech Ston...