First, a note on ordering, which is much more complicated with Thundercats than Silverhawks.
Regardless of what you may have seen on IMDb and various other sites, Thundercats ran four seasons, not two. Since the extent of the research the guys at Warner did for the Thundercats DVD release appears to have been "look it up on IMDb", the DVD's themselves give the wrong number of seasons.
(The best proof I've found for the four-season claim — other than my own not-inconsiderable memory — is on purrsiathunder.org. Purrsia has collected some original scripts, which are dated.)
(Also, if all goes well, you may be reading this at some point in the future when IMDb is no longer wrong. I'm trying to fix it but it's taken some time to convince the editors.)
But it's still not that simple, because the original broadcast order of Thundercats was itself wrong, with first-season episodes airing out of story order — notably, the Lion-O's Anointment arc aired with a bunch of episodes in-between instead of all five episodes running in a row. So there's an alternate order for those, too. Purrsia calls it the Modern Order. It's apocryphal, but I'm using it here because it makes a damn sight more sense than the broadcast order.
So, to wit, I've given three different versions of the numbering: MO for Modern Order, BO for Broadcast Order, and DVD for DVD order (which is the same as broadcast order but numbered differently).
Thundercats-Ho! aired as a TV movie and then was split up into 5 episodes. Note that numbering it as 1×66-70 is not strictly accurate, as it falls between season 1 and 2, but I'm using that numbering for sorting purposes.
So, to it.
| MO | BO | DVD | Title | Writer |
|---|---|---|---|---|
| 1×01 | 1×01 | 1×01 | Exodus | Leonard Starr |
| 1×02 | 1×02 | 1×02 | The Unholy Alliance | Leonard Starr |
| 1×03 | 1×03 | 1×03 | Berbils | Leonard Starr |
| 1×04 | 1×04 | 1×04 | The Slaves of Castle Plun-Darr | Leonard Starr |
| 1×05 | 1×07 | 1×07 | Trouble With Time | Ron Goulart & Julian P. Gardner |
| 1×06 | 1×05 | 1×05 | Pumm-Ra | Julian P. Gardner |
| 1×07 | 1×06 | 1×06 | The Terror of Hammerhand | Ron Goulart & Julian P. Gardner |
| 1×08 | 1×08 | 1×08 | The Tower of Traps | Leonard Starr |
| 1×09 | 1×09 | 1×09 | The Garden of Delights | Barney Cohen & Julian P. Gardner |
| 1×10 | 1×10 | 1×10 | Mandora — The Evil Chaser | William Overgard |
| 1×11 | 1×11 | 1×11 | The Ghost Warrior | Leonard Starr |
| 1×12 | 1×12 | 1×12 | The Doomgaze | Stephen Perry |
| 1×13 | 1×13 | 1×13 | Lord of the Snows | Bob Haney |
| 1×14 | 1×14 | 1×14 | The Spaceship Beneath the Sands | Leonard Starr |
| 1×15 | 1×15 | 1×15 | The Time Capsule | Peter Lawrence |
| 1×16 | 1×16 | 1×16 | The Fireballs of Plun-Darr | William Overgard |
| 1×17 | 1×17 | 1×17 | All That Glitters | Bob Haney |
| 1×18 | 1×18 | 1×18 | Spitting Image | Howard Post |
| 1×19 | 1×37 | 1×37 | Lion-O's Anointment First Day — The Trial of Strength | Leonard Starr |
| 1×20 | 1×42 | 1×42 | Lion-O's Anointment Second Day — The Trial of Speed | Leonard Starr |
| 1×21 | 1×46 | 1×46 | Lion-O's Anointment Third Day — The Trial of Cunning | Leonard Starr |
| 1×22 | 1×50 | 1×50 | Lion-O's Anointment Fourth Day — The Trial of Mind Power | Leonard Starr |
| 1×23 | 1×61 | 1×61 | Lion-O's Anointment Final Day — The Trial of Evil | Leonard Starr |
| 1×24 | 1×19 | 1×19 | Mongor | Peter Lawrence |
| 1×25 | 1×20 | 1×20 | Return to Thundera | Bob Haney |
| 1×26 | 1×25 | 1×25 | Snarf Takes Up the Challenge | Peter Lawrence |
| 1×27 | 1×31 | 1×31 | Mandora and the Pirates | William Overgard |
| 1×28 | 1×23 | 1×23 | The Crystal Queen | Leonard Starr |
| 1×29 | 1×24 | 1×24 | Safari Joe | Stephen Perry |
| 1×30 | 1×32 | 1×32 | Return of the Driller | Howard Post |
| 1×31 | 1×45 | 1×45 | Turmagar the Tuska | C. H. Trengove |
| 1×32 | 1×26 | 1×26 | Sixth Sense | Peter Lawrence |
| 1×33 | 1×21 | 1×21 | Dr. Dometone | William Overgard |
| 1×34 | 1×22 | 1×22 | The Astral Prison | Peter Lawrence |
| 1×35 | 1×34 | 1×34 | Queen of 8 Legs | Stephen Perry |
| 1×36 | 1×33 | 1×33 | Dimension Doom | Bob Haney |
| 1×37 | 1×43 | 1×43 | The Rock Giant | Peter Lawrence |
| 1×38 | 1×27 | 1×27 | The Thunder-Cutter | William Overgard |
| 1×39 | 1×48 | 1×48 | Mechanical Plague | Peter Lawrence |
| 1×40 | 1×38 | 1×38 | The Demolisher | Bob Haney & Peter Lawrence |
| 1×41 | 1×29 | 1×29 | Feliner, Part 1 | Stephen Perry |
| 1×42 | 1×30 | 1×30 | Feliner, Part 2 | Stephen Perry |
| 1×43 | 1×51 | 1×51 | Excalibur | Peter Lawrence |
| 1×44 | 1×52 | 1×52 | Secret of the Ice King | Bob Haney |
| 1×45 | 1×35 | 1×35 | Sword in a Hole | William Overgard |
| 1×46 | 1×28 | 1×28 | The Wolfrat | C. H. Trengove |
| 1×47 | 1×53 | 1×53 | Good and Ugly | Peter Lawrence |
| 1×48 | 1×55 | 1×55 | Divide and Conquer | Lee Schneider |
| 1×49 | 1×41 | 1×41 | The Micrits | Bruce Smith |
| 1×50 | 1×59 | 1×59 | The Superpower Potion | C. H. Trengove |
| 1×51 | 1×36 | 1×36 | The Evil Harp of Charr-Nin | Douglas Bernstein & Denis Markell |
| 1×52 | 1×40 | 1×40 | Tight Squeeze | Stephen Perry |
| 1×53 | 1×39 | 1×39 | Monkian's Bargain | Lee Schneider |
| 1×54 | 1×57 | 1×57 | Out of Sight | C. H. Trengove |
| 1×55 | 1×44 | 1×44 | Jackalman's Rebellion | Bruce Smith |
| 1×56 | 1×58 | 1×58 | The Mountain | Danny Peary |
| 1×57 | 1×60 | 1×60 | Eye of the Beholder | Kenneth E. Vose |
| 1×58 | 1×47 | 1×47 | The Mumm-Ra Berbil | Jeri Craden |
| 1×59 | 1×62 | 1×62 | The Trouble with Thunderkittens | Kimberly B. Morris |
| 1×60 | 1×63 | 1×63 | Mumm-Rana | Bob Haney |
| 1×61 | 1×49 | 1×49 | Trapped | Stephen Perry |
| 1×62 | 1×54 | 1×54 | The Transfer | Lawrence Dukore & Lee Schneider |
| 1×63 | 1×64 | 1×64 | The Shifter | Matthew Malach |
| 1×64 | 1×56 | 1×56 | Dream Master | Heather M. Winters & Annabelle Gurwitch |
| 1×65 | 1×65 | 1×65 | Fond Memories | Lee Schneider |
| 1×66 | 1×66 | 2×01 | Thundercats-Ho! Part 1 | Leonard Starr |
| 1×67 | 1×67 | 2×02 | Thundercats-Ho! Part 2 | Leonard Starr |
| 1×68 | 1×68 | 2×03 | Thundercats-Ho! Part 3 | Leonard Starr |
| 1×69 | 1×69 | 2×04 | Thundercats-Ho! Part 4 | Leonard Starr |
| 1×70 | 1×70 | 2×05 | Thundercats-Ho! Part 5 | Leonard Starr |
| 2×01 | 2×01 | 2×06 | Mumm-Ra Lives! Part 1 | Leonard Starr |
| 2×02 | 2×02 | 2×07 | Mumm-Ra Lives! Part 2 | Leonard Starr |
| 2×03 | 2×03 | 2×08 | Mumm-Ra Lives! Part 3 | Leonard Starr |
| 2×04 | 2×04 | 2×09 | Mumm-Ra Lives! Part 4 | Leonard Starr |
| 2×05 | 2×05 | 2×10 | Mumm-Ra Lives! Part 5 | Leonard Starr |
| 2×06 | 2×06 | 2×11 | Catfight | Chris Trengove |
| 2×07 | 2×07 | 2×12 | Psych Out | Sandy Fries |
| 2×08 | 2×08 | 2×13 | The Mask of Gorgon | Romeo Muller |
| 2×09 | 2×09 | 2×14 | The Mad Bubbler | Kimberly Morris |
| 2×10 | 2×10 | 2×15 | Together We Stand | Herb Engelhardt |
| 2×11 | 2×11 | 2×16 | Ravage Island | George Hampton & Mike Moore |
| 2×12 | 2×12 | 2×17 | Time Switch | Sandy Fries |
| 2×13 | 2×13 | 2×18 | The Sound Stones | J. Larry Carroll |
| 2×14 | 2×14 | 2×19 | Day of the Eclipse | Kimberly Morris |
| 2×15 | 2×15 | 2×20 | Sideswipe | William Overgard |
| 2×16 | 2×16 | 2×21 | Mumm-Rana's Belt | James Rose |
| 2×17 | 2×17 | 2×22 | Hachiman's Honor | J. Larry Carroll |
| 2×18 | 2×18 | 2×23 | Runaways | Bill Ratter |
| 2×19 | 2×19 | 2×24 | Hair of the Dog | Chris Trengove |
| 2×20 | 2×20 | 2×25 | Vultureman's Revenge | Herb Engelhardt |
| 3×01 | 3×01 | 2×26 | Thundercubs, Part 1 | Peter Lawrence |
| 3×02 | 3×02 | 2×27 | Thundercubs, Part 2 | Peter Lawrence |
| 3×03 | 3×03 | 2×28 | Thundercubs, Part 3 | Peter Lawrence |
| 3×04 | 3×04 | 2×29 | Thundercubs, Part 4 | Peter Lawrence |
| 3×05 | 3×05 | 2×30 | Thundercubs, Part 5 | Peter Lawrence |
| 3×06 | 3×06 | 2×31 | Totem of Dera | J. Larry Carroll |
| 3×07 | 3×07 | 2×32 | Chain of Loyalty | Bill Ratter & Peter Lawrence |
| 3×08 | 3×08 | 2×33 | Crystal Canyon | Sandy Fries |
| 3×09 | 3×09 | 2×34 | The Telepathy Beam | Kimberly Morris |
| 3×10 | 3×10 | 2×35 | Exile Isle | William Overgard |
| 3×11 | 3×11 | 2×36 | The Key to Thundera | Matthew Malach |
| 3×12 | 3×12 | 2×37 | Return of the Thundercubs | J. Larry Carroll |
| 3×13 | 3×13 | 2×38 | The Formula | Kimberly Morris |
| 3×14 | 3×14 | 2×39 | Locket of Lies | Bill Ratter |
| 3×15 | 3×15 | 2×40 | Bracelet of Power | Bill Ratter |
| 3×16 | 3×16 | 2×41 | The Wild Workout | Becky Hartman |
| 3×17 | 3×17 | 2×42 | The Thunderscope | George Hampton & Mike Moore |
| 3×18 | 3×18 | 2×43 | The Jade Dragon | William Overgard |
| 3×19 | 3×19 | 2×44 | The Circus Train | William Overgard |
| 3×20 | 3×20 | 2×45 | The Last Day | J. Larry Carroll |
| 4×01 | 4×01 | 2×46 | Return to Thundera! Part 1 | Peter Lawrence |
| 4×02 | 4×02 | 2×47 | Return to Thundera! Part 2 | Peter Lawrence |
| 4×03 | 4×03 | 2×48 | Return to Thundera! Part 3 | Peter Lawrence |
| 4×04 | 4×04 | 2×49 | Return to Thundera! Part 4 | Peter Lawrence |
| 4×05 | 4×05 | 2×50 | Return to Thundera! Part 5 | Peter Lawrence |
| 4×06 | 4×06 | 2×51 | Leah | J. Larry Carroll & David Carren |
| 4×07 | 4×07 | 2×52 | Frogman | Kimberly Morris |
| 4×08 | 4×08 | 2×53 | The Heritage | Bill Ratter & Peter Lawrence |
| 4×09 | 4×09 | 2×54 | Screwloose | William Overgard |
| 4×10 | 4×10 | 2×55 | Malcar | George Hampton & Mike Moore |
| 4×11 | 4×11 | 2×56 | Helpless Laughter | Matthew Malach |
| 4×12 | 4×12 | 2×57 | Cracker's Revenge | William Overgard |
| 4×13 | 4×13 | 2×58 | The Mossland Monster | Chris Trengove |
| 4×14 | 4×14 | 2×59 | Ma-Mutt's Confusion | Beth Bornstein |
| 4×15 | 4×15 | 2×60 | Shadowmaster | Dennis J. Woodyard |
| 4×16 | 4×16 | 2×61 | Swan Song | William Overgard |
| 4×17 | 4×17 | 2×62 | Touch of Amortus | Bill Ratter |
| 4×18 | 4×18 | 2×63 | The Zaxx Factor | Matthew Malach |
| 4×19 | 4×19 | 2×64 | Well of Doubt | Dennis J. Woodyard |
| 4×20 | 4×20 | 2×65 | The Book of Omens | William Overgard |
