Thundercats was a 130 episode cartoon series that aired during the 1985–1989 television seasons. Warner Brothers has released the complete series of Thundercats on DVD in two different configurations. The first was released between 2005 and 2006 which consisted of four box set volumes with 6 discs each. The second was as a 2019 complete series box set consisting of twelve discs with all episodes crammed into 12 discs instead of 24 from original release, which means each episode took less space and was compressed more. If you want better video quality, then get the 2005-06 4 box set version.
4 Separate Boxset version
Season 1 Volume 1 (UPC: 012569705173) – 6 discs
Disc 1
• Exodus
• The Unholy Alliance
• Berbils
• The Slaves of Castle Plun-Darr
• Pumm-Ra
• The Terror of Hammerhand
Disc 2
• Trouble with Time
• The Tower of Traps
• The Garden of Delights
• Mandora – The Evil Chaser
• The Ghost Warrior
• The Doom-Gaze
Disc 3
• Lord of the Snows
• The Spaceship Beneath the Sands
• The Time Capsule
• The Fireballs of Plun-Darr
• All that Glitters
• Spitting Image
Disc 4
• Mongor
• Return to Thundera
• Dr. Dometone
• The Astral Prison
• The Crystal Queen
Disc 5
• Safari Joe
• Snarf Takes Up the Challenge
• Sixth Sense
• The Thunder-Cutter
• The Wolfrat
Disc 6
• Feliner – Part 1
• Feliner – Part 2
• Mandora and the Pirates
• Return of the Driller
• Dimension Doom
Season 1 Volume 2 (UPC: 012569705210) – 6 discs
Disc 1
• Queen of 8 Legs
• Sword in a Hole
• The Evil Harp of Charr-Nin
• Lion-O’s Anointment First Day: Trial of Strength
• The Demolisher
• Monkian’s Bargain
Disc 2
• Tight Squeeze
• The Micrits
• Lion-O’s Anointment Second Day: The Trial of Speed
• The Rock Giant
• Jackalman’s Rebellion
• Turmagar the Tuska
Disc 3
• Lion-O’s Anointment Third Day: Trial of Cunning
• The Mumm-Ra Berbil
• Mechanical Plague
• Trapped
• Lion-O’s Anointment Fourth Day: The Trial of Mind Power
• Excalibur
Disc 4
• Secret of the Ice King
• Good and Ugly
• The Transfer
• Divide and Conquer
• Dream Master
• Out of Sight
Disc 5
• The Mountain
• The Superpower Potion
• Eye of the Beholder
• Lion-O’s Anointment Final Day: The Trial of Evil
Disc 6
• The Trouble with ThunderKittens
• Mumm-Rana
• The Shifter
• Fond Memories
Season 2 Volume 1 (UPC: 012569753526) – 6 discs
Disc 1
• ThunderCats Ho! – Part I
• ThunderCats Ho! – Part II
• ThunderCats Ho! – Part III
• ThunderCats Ho! – Part IV
• ThunderCats Ho! – Part V
Disc 2
• Mumm-Ra Lives! Part I
• Mumm-Ra Lives! Part II
• Mumm-Ra Lives! Part III
• Mumm-Ra Lives! Part IV
• Mumm-Ra Lives! Part V
Disc 3
• Catfight
• Psych Out
• The Mask of Gorgon
• The Mad Bubbler
• Together We Stand
• Ravage Island
Disc 4
• Time Switch
• The Sound Stones
• Day of the Eclipse
• Sideswipe
• Mumm-Rana’s Belt
• Hachiman’s Honor
Disc 5
• Runaways
• Hair of the Dog
• Vultureman’s Revenge
• ThunderCubs – Part I
• ThunderCubs – Part II
• ThunderCubs – Part III
Disc 6
• ThunderCubs – Part IV
• ThunderCubs – Part V
• The Totem of Dera
• The Chain of Loyalty
• Crystal Canyon
• The Telepathy Beam
Season 2 Volume 2 (UPC: 012569805774) – 6 discs
Disc 1
• Exile Isle
• Key to Thundera
• Return of the ThunderCubs
• The Formula
• Locket of Lies
• Bracelet of Power
Disc 2
• The Wild Workout
• The Thuderscope
• The Jade Dragon
• The Circus Train
• The Last Day
Disc 3
• Return to Thundera – Part I
• Return to Thundera – Part II
• Return to Thundera – Part III
• Return to Thundera – Part IV
• Return to Thundera – Part V
Disc 4
• Leah
• Frogman
• The Heritage
• Screwloose
• Malcar
• Helpless Laughter
Disc 5
• Cracker’s Revenge
• The Mossland Monster
• Ma-Mutt’s Confusion
• The Shadowmaster
• Swan Song
• The Touch of Amortus
Disc 6
• The Zaxx Factor
• Well of Doubt
• The Book of Omens
Special Features:
Season 1 Volume 1: Feel the Magic, Hear The Roar! Thundercats Fan Speak Out! (7:07) – Wil Wheaton and other loyal fans give their memories and support to this animation classic.
Season 1 Volume 2: Thundercats Ho! Creating a Pop-Culture Phenomenon (21:38) – Executive producer Arthur Rankin Jr. and other cast and crew members share secrets from the show.
Season 2 Volume 1: The Music of Thundera (8:32) – Composer Bernie Hoffer and The Rembrandts reveal the inspirations behind the music.
Season 2 Volume 1: The Rembrandts Thundercats Theme Song Music Video (2:57)
Season 2 Volume 1: Bernie Hoffer – Live! (1:14) – The Thundercats theme song performed by its composer, framed by trivia about Mr. Hoffer.
Season 2 Volume 2: Thundercats Ultimate Adventure Challenge – This set-top game is very involved, requiring an extensive knowledge of Thundercats minutia and lots of disc-swapping and episode rewatching.
Thundercats: The Complete Series version
Season 1 Volume 1 – 6 discs
Season 2 Volume 1 – 6 discs
Sames special features except for Thundercats Ultimate Adventure Challenge.