ThunderCats premiered on Cartoon Network on July 29, 2011 in an hour long pilot. The 2011 series was planned for 52 episodes spread over two seasons but unfortunately it was cancelled after only the first season of 26 episodes on June 16, 2012. While initially it was stated that the show had been put on hiatus, Art Director Dan Norton confirmed in early 2013 that the show had officially been cancelled. Reruns of the show later aired on Adult Swim's Toonami block along with Sym-Bionic Titan.
Pilot
| Episode | Title | Original Airdate | ||
| 01 | Omens, Part I | July 29, 2011 | ||
| 02 | Omens, Part II | July 29, 2011 | ||
| Episode | Title | Original Airdate |
| 03 | Ramlak Rising | August 5, 2011 |
| 04 | Song of the Petalars | August 12, 2011 |
| 05 | Old Friends | August 19, 2011 |
| 06 | Journey to the Tower of Omens | August 26, 2011 |
| 07 | Legacy | September 2, 2011 |
| 08 | The Duelist and the Drifter | September 9, 2011 |
| 09 | Berbils | October 28, 2011 |
| 10 | Sight Beyond Sight | November 4, 2011 |
| 11 | The Forest of Magi Oar | November 11, 2011 |
| 12 | Into the Astral Plane | November 18, 2011 |
| 13 | Between Brothers | November 25, 2011 |
| 14 | New Alliances | March 24, 2012 |
| 15 | Trials of Lion-O, Part 1 | March 31, 2012 |
| 16 | Trials of Lion-O, Part 2 | April 7, 2012 |
| 17 | Native Son | April 14, 2012 |
| 18 | Survival of the Fittest | April 21, 2012 |
| 19 | The Pit | April 28, 2012 |
| 20 | Curse of Ratilla | May 5, 2012 |
| 21 | Birth of the Blades | May 12, 2012 |
| 22 | The Forever Bag | May 29, 2012 |
| 23 | Recipe for Disaster | May 26, 2012 |
| 24 | The Soul Sever | June 2, 2012 |
| 25 | What Lies Above, Part 1 | June 9, 2012 |
| 26 | What Lies Above, Part 2 | June 16, 2012 |