Mutant Appearances:

S-s-slithe Stats & Trivia

S-s-slithe

Number of Apperances: 59 - S1 & S2
Non-S-s-slithe Eps, Season 1:
Berbils
Trouble with Time
Tower of Traps
Mandora Evil Chaser
The Ghost Warrior
The Time Capsule
All That Glitters
Spitting Image
Trial of Strength
Mongor
Mandora and the Pirates
Crystal Queen
Safari Joe
Return of the Driller
Turmagar the Tuska
Dr Dometone
Queen of 8 Legs
The Rock Giant
Demolisher
Excalibur
Secret of the Ice King
Sword in a Hole
Good and Ugly
Evil Harp of Charr-nin
Monkian's Bargain

Non-S-s-slithe Eps, Season 2:
Thundercats Ho Part 1
Mumm-Ra Lives Parts 4 and 5
Catfight
Psych Out
Mask of Gorgon
Mad Bubbler
Together We Stand
Time Switch
Day of the Eclipse
Side Swipe
Hachiman's Honor
Runaways
Hair of the Dog
Thundercubs Part 1 and 3
Totem of Dera
Chain of Loyalty
Crystal Canyon
Telepathy Beam
Exile Isle
Key to Thundera
Locket of Lies
Bracelet of Power
The Wild Workout
The Thunderscope
Jade Dragon
The Last Day
Return to Thundera Part 2 and 3 and 5
Leah
Frogman
The Heritage
Screw Loose
Malcar
Helpless Laughter
Cracker's Revenge
The Mossland Monster
Ma-mutt's Confusion
Shadowmaster
Swan Song
Touch of Amortus
Zaxx Factor
Well of Doubt
Book of Omens

Jackalman Stats & Trivia

Jackalman

Number of Apperances: 57 - S1 & S2
Non-Jackalman Eps, Season 1:
Berbils
Trouble with Time
Tower of Traps
Mandora Evil Chaser The Ghost Warrior
The Time Capsule
All That Glitters
Spitting Image
Trial of Strength
Mongor
Mandora and the Pirates
Crystal Queen
Safari Joe
Return of the Driller
Turmagar the Tuska
Dr Dometone
Queen of 8 Legs
Dimension Doom
The Rock Giant
Demolisher
Excalibur
Secret of the Ice King
Sword in a Hole
Good and Ugly
Evil Harp of Charr-nin
Monkian's Bargain
Fond Memories

Non-Jackalman Eps, Season 2:
Thundercats Ho Part 1
Mumm-Ra Lives Parts 4 and 5
Catfight
Psych Out
Mask of Gorgon
Mad Bubbler
Together We Stand
Time Switch
Side Swipe
Mumm-Rana's Belt
Hachiman's Honor
Runaways
Hair of the Dog
Thundercubs Part 3 and 5
Chain of Loyalty
Crystal Canyon
Telepathy Beam
Exile Isle
Key to Thundera
Return of Thundercubs
The Formula
Locket of Lies
Bracelet of Power
The Wild Workout
The Thunderscope
Jade Dragon
The Last Day
Return to Thundera Part 2 and 3 and 5
Leah
Frogman
The Heritage
Screw Loose
Malcar
Helpless Laughter
Cracker's Revenge
The Mossland Monster
Ma-mutt's Confusion
Shadowmaster
Swan Song
Touch of Amortus
Zaxx Factor
Well of Doubt
Book of Omens

Bonus Info: In Season 1, Jackalman and Slithe appear in all the same episodes but for two - Dimension Doom and Fond Memories, where Slithe appears without fellow Mutant Jackalman.

Monkian Stats & Trivia

Monkian

Number of Apperances: 55 - S1 & S2
Non-Monkian Eps, Season 1:
Berbils
Trouble with Time
Tower of Traps
Mandora Evil Chaser The Ghost Warrior
The Time Capsule
All That Glitters
Spitting Image
Trial of Strength
Mongor
Mandora and the Pirates
Crystal Queen
Safari Joe
Return of the Driller
Turmagar the Tuska
Dr Dometone
Queen of 8 Legs
Dimension Doom
The Rock Giant
Demolisher
Excalibur
Secret of the Ice King
Sword in a Hole
Good and Ugly
Micrits
Evil Harp of Charr-nin
The Transfer
The Dream Master
Fond Memories

Non-Monkian Eps, Season 2:
Thundercats Ho Part 1
Mumm-Ra Lives Parts 4 and 5
Catfight
Psych Out
Mask of Gorgon
Mad Bubbler
Together We Stand
Time Switch
Sound Stones
Side Swipe
Hachiman's Honor
Runaways
Hair of the Dog
Thundercubs Parts 1, 3 and 5
Chain of Loyalty
Crystal Canyon
Telepathy Beam
Exile Isle
Key to Thundera
Locket of Lies
Bracelet of Power
The Wild Workout
The Thunderscope
Jade Dragon
The Last Day
Return to Thundera Part 2, 3 and 5
Leah
Frogman
The Heritage
Screw Loose
Malcar
Helpless Laughter
Cracker's Revenge
The Mossland Monster
Ma-mutt's Confusion
Shadowmaster
Swan Song
Touch of Amortus
Zaxx Factor
Well of Doubt
Book of Omens

Bonus Info: Monkian's biggest role was in Season One episode, Monkian's Bargain.

Vultureman Stats & Trivia

Vultureman

Number of Apperances: 40 - S1 & S2
Eps in which Vultureman appeared, Season 1:
Lord of the Snows
Return to Thundera
Snarf Takes Up the Challenge
Sixth Sense
Astral Prison
Mechanical Plague
Feliner Part 1 and 2
Wolfrat
Divide and Conquer
Micrits
Super Power Potion
Tight Squeeze
Out of Sight
Jackalman's Rebellion
Eye of the Beholder
Trouble with Thunderkittens
The Transfer
The Shifter

Eps in which Vultureman appeared, Season 2:
Thundercats Ho Parts 2, 3, and 4
Mumm-Ra Lives Parts 1, 2 and 3
Ravage Island
Sound Stones
Side Swipe
Vultureman's Revenge
Thundercubs Part 1, 2, 4 and 5
Totem of Dera
Telepathy Beam
Return of Thundercubs
Circus Train
Return to Thundera Part 1 and 4
The Zaxx Factor

Bonus Info: Vultureman is the only mutant to appear in an episode past Return to Thundera Part 4 - all other main mutants had that ep as their final series appearance.

Ratar-O Stats & Trivia

Ratar-O

Number of Apperances: 6 - S1 & S2
Eps in which Ratar-O appeared:
Feliner Part 1 & 2
Fond Memories
Thundercats Ho! Parts 2, 3, and 4

Ratilla Stats & Trivia

Ratilla

Number of Apperances: 1 - S2 Only
Ep in which Ratilla appeared:
Thundercubs Part 1