The inhabitants of the planet Thundera evacuate just before it is destroyed. They were pursued by a band of mutants. All but one of their escape ships was destroyed. Only a small group of Thunderians (Thundercats) remained. With only half engine power, the group, which was led by Jaga, had to set a course for the nearest planet. Jaga commanded their ship while the other seven were in their stasis tubes. Jaga died on their journey to Third Earth and their ship crashed there. Soon they made friends with various groups in the area and they designed a fortress. Mumm-Ra the centuries-old embodiment of evil, along with the mutants that destroyed the rest of the Thunderians are a constant threat. But Lion-O, the new leader of the Thundercats, with his weapon the "Sword of Omens" will help the Thundercats to have a standing chance.
| Title | Time | |
|---|---|---|
| 1 | Exodus | 1985-01-23 |
| 2 | The Unholy Alliance | 1985-01-23 |
| 3 | Berbils | 1985-09-11 |
| 4 | The Slaves of Castle Plun-Darr | 1985-09-12 |
| 5 | Pumm-Ra | 1985-09-13 |
| 6 | The Terror of Hammerhand | 1985-09-16 |
| 7 | Trouble with Time | 1985-09-17 |
| 8 | The Tower of Traps | 1985-09-18 |
| 9 | The Garden of Delights | 1985-09-19 |
| 10 | Mandora: the Evil Chaser | 1985-09-20 |
| 11 | The Ghost Warrior | 1985-09-23 |
| 12 | The Doomgaze | 1985-09-24 |
| 13 | Lord of the Snows | 1985-09-25 |
| 14 | The Spaceship Beneath the Sands | 1985-09-26 |
| 15 | The Time Capsule | 1985-09-27 |
| 16 | The Fireballs of Plun-Darr | 1985-09-30 |
| 17 | All That Glitters | 1985-10-01 |
| 18 | Spitting Image | 1985-10-02 |
| 19 | Mongor | 1985-10-03 |
| 20 | Return to Thundera | 1985-10-04 |
| 21 | Dr. Dometone | 1985-10-07 |
| 22 | The Astral Prison | 1985-10-08 |
| 23 | The Crystal Queen | 1985-10-09 |
| 24 | Safari Joe | 1985-10-10 |
| 25 | Snarf Takes Up the Challenge | 1985-10-11 |
| 26 | Sixth Sense | 1985-10-28 |
| 27 | The Thunder-Cutter | 1985-10-29 |
| 28 | The Wolfrat | 1985-10-30 |
| 29 | Feliner (1) | 1985-10-31 |
| 30 | Feliner (2) | 1985-11-01 |
| 31 | Mandora and the Pirates | 1985-11-04 |
| 32 | Return of the Driller | 1985-11-05 |
| 33 | Dimension Doom | 1985-11-06 |
| 34 | Queen of 8 Legs | 1985-11-07 |
| 35 | Sword in a Hole | 1985-11-08 |
| 36 | The Evil Harp of Charr-Nin | 1985-11-11 |
| 37 | Lion-O's Anointment First Day: Trial of Strength | 1985-11-12 |
| 38 | The Demolisher | 1985-11-13 |
| 39 | Monkian's Bargain | 1985-11-14 |
| 40 | Tight Squeeze | 1985-11-15 |
| 41 | The Micrits | 1985-11-18 |
| 42 | Lion-O's Anointment Second Day: The Trial of Speed | 1985-11-19 |
| 43 | The Rock Giant | 1985-11-20 |
| 44 | Jackalman's Rebellion | 1985-11-21 |
| 45 | Turmagar the Tuska | 1985-11-22 |
| 46 | Lion-O's Anointment Third Day: Trial of Cunning | 1985-11-25 |
| 47 | The Mumm-Ra Berbil | 1985-11-26 |
| 48 | Mechanical Plague | 1985-11-27 |
| 49 | Trapped | 1985-11-28 |
| 50 | Lion-O's Anointment Fourth Day: The Trial of Mind Power | 1985-11-29 |
| 51 | Excalibur | 1985-12-02 |
| 52 | Secret of the Ice King | 1985-12-03 |
| 53 | Good and Ugly | 1985-12-04 |
| 54 | The Transfer | 1985-12-05 |
| 55 | Divide and Conquer | 1985-12-06 |
| 56 | Dream Master | 1985-12-09 |
| 57 | Out of Sight | 1985-12-10 |
| 58 | The Mountain | 1985-12-11 |
| 59 | The Superpower Potion | 1985-12-12 |
| 60 | Eye of the Beholder | 1985-12-13 |
| 61 | Lion-O's Anointment Final Day: The Trial of Evil | 1985-12-16 |
| 62 | The Trouble with ThunderKittens | 1985-12-17 |
| 63 | Mumm-Rana | 1985-12-18 |
| 64 | The Shifter | 1985-12-19 |
| 65 | Fond Memories | 1985-12-20 |
