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Season 1 of Thundercats began with the pilot being broadcast on January 23, 1985. The pilot consisted of the first two episodes, "Exodus" and "The Unholy Alliance" back-to-back. After the pilot, the rest of the episodes began airing on a regular basis from September 11 of the same year. The first season comprised of 65 episodes with the last episode, "Fond Memories", being aired on December 20, 1985.

Many of the episodes in Season 1, especially the initial episodes, were written by Leonard Starr. His episodes had an "introductory" purpose and helped to establish many of the characters and settings of the show. Among his notable episodes were the 5 "Anointment Trials" episodes. Strangely, these 5 episodes were not broadcast back-to-back even though that is how they take place and how they were meant to be viewed.

Season 1 introduces the viewers to the ThunderCats, their enemies the Mutants and the main antagonist Mumm-Ra. The episodes mainly deal with the ThunderCats trying to adapt to their new home planet of Third Earth and its inhabitants as well as to fend off the attacks of the Mutants and Mumm-Ra.

When not fighting these main villains, the ThunderCats were often shown exploring their new home, usually searching for Thundrillium, their main fuel source. Season 1 also introduced a number of characters who would go on to become the ThunderCats' strongest allies such as Berbils, Warrior Maidens and Snowman among others. A number of new villains also made their debut in this season, with some only appearing once while others having a recurring role.

ThunderCats Bullet Point Broadcasted Episodes[]

Number Title Original Airdate
1.01 Exodus January 23, 1985
1.02 The Unholy Alliance January 23, 1985
1.03 Berbils September 11, 1985
1.04 The Slaves of Castle Plun-Darr September 12, 1985
1.05 Pumm-Ra September 13, 1985
1.06 The Terror of Hammerhand September 16, 1985
1.07 Trouble with Time September 17, 1985
1.08 The Tower of Traps September 18, 1985
1.09 The Garden of Delights September 19, 1985
1.10 Mandora - The Evil Chaser September 20, 1985
1.11 The Ghost Warrior September 23, 1985
1.12 The Doom-Gaze September 24, 1985
1.13 Lord of the Snows September 25, 1985
1.14 The Spaceship Beneath the Sands September 26, 1985
1.15 The Time Capsule September 27, 1985
1.16 The Fireballs of Plun-Darr September 30, 1985
1.17 All That Glitters October 1, 1985
1.18 Spitting Image October 2, 1985
1.19 Mongor October 3, 1985
1.20 Return to Thundera October 4, 1985
1.21 Dr. Dometone October 7, 1985
1.22 The Astral Prison October 8, 1985
1.23 The Crystal Queen October 9, 1985
1.24 Safari Joe October 10, 1985
1.25 Snarf Takes Up The Challenge October 11, 1985
1.26 Sixth Sense October 28, 1985
1.27 The Thunder-Cutter October 29, 1985
1.28 The Wolfrat October 30, 1985
1.29 Feliner - Part I October 31, 1985
1.30 Feliner - Part II November 1, 1985
1.31 Mandora and the Pirates November 4, 1985
1.32 Return of the Driller November 5, 1985
1.33 Dimension Doom November 6, 1985
1.34 Queen of 8 Legs November 7, 1985
1.35 Sword in a Hole November 8, 1985
1.36 The Evil Harp of Charr-Nin November 11, 1985
1.37 Lion-O's Anointment First Day November 12, 1985
1.38 The Demolisher November 13, 1985
1.39 Monkian's Bargain November 14, 1985
1.40 Tight Squeeze November 15, 1985
1.41 The Micrits November 18, 1985
1.42 Lion-O's Anointment Second Day November 19, 1985
1.43 The Rock Giant November 20, 1985
1.44 Jackalman's Rebellion November 21, 1985
1.45 Turmagar the Tuska November 22, 1985
1.46 Lion-O's Anointment Third Day November 25, 1985
1.47 The Mumm-Ra Berbil November 26, 1985
1.48 Mechanical Plague November 27, 1985
1.49 Trapped November 28, 1985
1.50 Lion-O's Anointment Fourth Day November 29, 1985
1.51 Excalibur December 2, 1985
1.52 Secret of the Ice King December 3, 1985
1.53 Good and Ugly December 4, 1985
1.54 The Transfer December 5, 1985
1.55 Divide and Conquer December 6, 1985
1.56 Dream Master December 9, 1985
1.57 Out of Sight December 10, 1985
1.58 The Mountain December 11, 1985
1.59 The Superpower Potion December 12, 1985
1.60 Eye of the Beholder December 13, 1985
1.61 Lion-O's Anointment Final Day December 16, 1985
1.62 The Trouble with ThunderKittens December 17, 1985
1.63 Mumm-Rana December 18, 1985
1.64 The Shifter December 19, 1985
1.65 Fond Memories December 20, 1985
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