Thundercats Wiki
Origin Third Earth
Weapons & Accessories
Weapons Sword of Plun-Darr
Voice Actor
Voiced by Earl Hammond
Character Guide
Page List of all characters

For the article about the 2011 version of this character, see Mumm-Ra (2011).

Mumm-Ra is the main antagonist of ThunderCats. He is a mummified demon priest who is apparently immortal. He has almost unlimited knowledge of all kinds of evil and black magic and sorcery. He has survived on Third Earth for thousands of years, possibly from the time when it was First Earth. Mumm-Ra has a zombie like appearance and greyish skin with big bright red eyes and jagged teeth. His body is covered in mummification bandages and he wears a red cape at all times, covering his withered body. He walks with a slight hunch and appears very frail.

Mumm-Ra's sole companion is his trusted pet, the demonic bulldog Ma-Mutt, who resides with him in his pyramid. Ma-Mutt is fiercely loyal to his master and will follow his every command.

He resides inside the Black Pyramid amid what appear to be the ruins of ancient Egyptian civilization. In fact, many aspects of Mumm-Ra, including his name, allude to the fact that he is of Egyptian origin. Inside his pyramid is, among other things, a stone sarcophagus. Mumm-Ra spends much of his time resting inside this tomb, replenishing his energy. In front of it is a giant cauldron filled with magical bubbling pink water.

However, Mumm-Ra's real power comes from the four giant statues surrounding his tomb. Within these statues reside the Ancient Spirits of Evil, evil beings with almost unlimited power whom Mumm-Ra considers to be his masters. Mumm-Ra does their every bidding and tries his best never to anger them.

Whenever Mumm-Ra recites the incantation: "Ancient Spirits of Evil, transform this decayed form... to Mumm-Ra, the Ever-Living!" he is transformed into a very muscular form, standing almost 9 feet tall and seemingly invincible. In this form, only a few strands of his bandages remain draped over his super muscular torso. He also wears a helmet with his evil emblem of the two headed snakes, which also appears on his chest.

While in his Ever-Living form, Mumm-Ra is extremely powerful and a formidable adversary for any being that dares to challenge him. He can cast magical spells, shoot energy bolts from his hands and eyes, fly, change his appearance, and perform feats of phenomenal strength. However, being in this state greatly drains him of his energy and he has to revert back to his mummified form and rest in his sarcophagus to replenish his lost strength.

He also has an even more powerful form than his Ever-Living form. In this state, he becomes "Mumm-Ra the All-Powerful". He achieves this form by absorbing the entire power of the Ancient Spirits and becomes much bigger in size with a sinister facial appearance and changes to his loin cloth design as well. To transform into his All-Powerful form, he first assumes the form of Mumm-Ra the Ever-Living. Then, as the Ancient Spirits of Evil physically manifest in the form of glowing, ethereal forms that step out of their normal statues and lay their hands upon Mumm-Ra, he chants this incantation: "Grant me the super strength of all your wise and wicked wizardry!"

Mumm-Ra wants to rule Third Earth alone and he craves more power. For these reasons, when the ThunderCats arrived on Third Earth, he had only two purposes, to eliminate them and to obtain the Eye of Thundera from them, a source of unlimited power. Because of his own physical limitations and not wanting to risk his own safety, he first made the Mutants work for him and then later on, he employed the services of the Lunataks.

The evil wizard has also used a number of villainous characters in his schemes to destroy the ThunderCats, including mercenaries such as Captain Shiner, Driller, and the Berserkers to evil spirits such as Mirror Wraith, and Grune. Many times, Mumm-Ra has carried out his plans alone by changing his form and tackling the ThunderCats himself.

ThunderCats Bullet Point Alternative forms[]

Mumm-Ra's master over sorcery and magic allows him to assume alias forms to deceive the ThunderCats on various occasions. The forms that he has taken are:

Name Image Description Episode Voiced by
Mumm-Ra Everliving
Mumm-Ra changes into his Ever-living form in order to fight the ThunderCats. Numerous episodes Earl Hammond
Mumm-Ra All Powerful
Mumm-Ra assumes an even more powerful version of his Ever-living form to battle the ThunderCats. "The Last Day" Earl Hammond
Giant Locust
Mumm-Ra Locust
Mumm-Ra takes the form of a giant locust to attack Lion-O in the Berbil Village. "Berbils" None
Pumm-Ra cap (8)
Mumm-Ra takes on the form of a Thunderian puma and pretends to rescue Cheetara so that he can gain entry into Cats Lair. "Pumm-Ra" Earl Hammond
Garden of Delights3
Mumm-Ra takes on the form of a flower-like creature with a human face, and puts Tygra under his spell by feeding him an addictive fruit. "The Garden of Delights" Lynne Lipton
Grygory Grygian
Mumm-Ra takes the form of a jovial troll, and tricks Lion-O and Tygra into attacking each other and breaking the Sword of Omens. "All That Glitters" Peter Newman
Mumm-Ra takes the form of a sorceress and sends Lion-O into the Astral World, from which he can never return. "The Astral Prison" Lynne Lipton
Mumm-Ra takes the form of a tiny sprite-like creature and lures Lion-O into Spidera's Kingdom of Webs. "Queen of 8 Legs" Lynne Lipton
Mumm-Ra Berbil
Mumm-Ra takes the form of a Berbil and fakes an injury to gain entry into Cats Lair. "The Mumm-Ra Berbil" Earl Hammond
King Arthur
King Arthur Mumm-Ra
Mumm-Ra takes the form of King Arthur to obtain the legendary magic sword Excalibur, and use it against the Sword of Omens. "Excalibur" Earl Hammond
Dr. Dometone
Dr. Dometone
Mumm-Ra takes the form of Dr. Dometone to lure Lion-O into his trap. "Fond Memories" Bob McFadden
Mumm-Ra Lion-O 1
Mumm-Ra takes the form of an evil, red-colored mirror Lion-O in order to battle against the real Lion-O. "Fond Memories" Larry Kenney
Mumm-Ra Jaga
Mumm-Ra takes the form of Jaga in order to turn the old ThunderCats against the three new ThunderCats (Bengali, Pumyra, and Lynx-O) "Catfight" Earl Hammond
Mumm-Ra Kudi
Mumm-Ra takes the form of Kudi in order to infiltrate Cats Lair. "Runaways" Gerrianne Raphael
Snarf Eggbert
Mumm-Ra Snarf Eggbert
Mumm-Ra takes the form of Snarf Eggbert in order to join the ThunderCats in their search for the Chain of Loyalty. "The Chain of Loyalty" Larry Kenney
Fog of Despair
Fog of Despair
Mumm-Ra takes the form of the Fog of Despair in order to grab Cheetara, Tygra, and Panthro and drop them into the Canyon of Youth. "Return of the ThunderCubs" Earl Hammond
Mumm-Ra Lion-O 2
Mumm-Ra takes the form of Lion-O in order to trick the ThunderCubs into locating the Mirror of Truth for him. "Return of the ThunderCubs" Larry Kenney
Mumm-Ra Fly
Mumm-Ra takes the form of a small fly so that he can gain entry into Cats Lair and steal the Bracelet of Power. "Bracelet of Power" Earl Hammond
Mumm-Ra Lynx-O
Mumm-Ra takes the form of an injured Lynx-O in order to ambush Lion-O and steal the Thunderscope. "The Thunderscope" Doug Preis
Mumm-Ra Jaga 2
Mumm-Ra takes the form of Jaga in order to make Jagara do his bidding. "Return to Thundera - Part I",
"Return to Thundera - Part III"
Earl Hammond
Mumm-Ra Bolkin
Mumm-Ra takes the form of a Bolkin to gain entry into Cats Lair and steal the harp of Charr-Nin "The Evil Harp of Charr-Nin" Peter Newman
Mumm-Ra Turmagar
Mumm-Ra takes on the form of Turmagar the Tuska in order to turn the old ThunderCats against the three new ThunderCats (Bengali, Pumyra, and Lynx-O) "Catfight" Earl Hammond
Mumm-Ra Snarfer
Mumm-Ra takes on the form of Snarfer in order to locate the Treasure of Thundera "ThunderCubs - Part III" Bob McFadden
Mumm-Ra Nayda
Mumm-Ra takes on the form of Nayda. "The Mask of Gorgon" Lynne Lipton
Mumm-Ra Panthro
Mumm-Ra takes on the form of Panthro. "Screwloose" Earle Hyman
Scarab Beetle
Mumm-Ra Scarab Beetle
Mumm-Ra takes on the form of a Scarab Beetle to infiltrate Cats Lair. "The Book of Omens" None

ThunderCats Bullet Point Strengths[]

Mumm-Ra's greatest strength is his command over various kinds of magic. He can achieve almost anything using his magical powers. In his Ever-Living form, the Ancient Spirits of Evil grant him even more strength and magical powers. He also has the ability to transform into an even stronger "All-Powerful" form. Mumm-Ra's magic allows him even to shoot powerful energy bolts from his hands.

Also Mumm-Ra's immortality means that he can never be truly killed. Many times when he was thought to be dead, he was revived by the Ancient Spirits of Evil. Whenever weakened or defeated, he returns to his sarcophagus to replenish his energy.

Having lived for thousands of years, Mumm-Ra has an encyclopedic knowledge of every being, artifact and location on Third Earth as well as many other planets. He knew about the Eye of Thundera before he even met the ThunderCats. He often uses this vast knowledge against the ThunderCats

ThunderCats Bullet Point Weaknesses[]

Mumm-Ra's main weakness was his inability to see his own reflection. Whenever he got even a glimpse of his own reflection, he would tremble in fear and revert back to his mummified form and hide in his sarcophagus. The ThunderCats utilized this weakness on many occasions to foil his plans, showing Mumm-Ra his reflection in Lion-O's Claw Shield, ThunderKittens' Trick Pellet's Bubbles, the blade of the Sword of Omens and even the shiny surface of the Feliner. Mumm-Ra once even tried to wear special anti-reflective goggles to overcome this weakness but the ThunderCats succeeded in removing them.

However, when the Ancient Spirits of evil revived him after his apparent destruction at the hands of the Star of Thundera, they eliminated this weakness from Mumm-Ra, making him even stronger.

The other weakness that Mumm-Ra has is his inability to remain in his Ever-Living form outside his pyramid for long periods of time. He tires very quickly and often has to return back to his sarcophagus in order to rest and regain his strength.

ThunderCats Bullet Point Weapons and Equipment[]

While Mumm-Ra mainly relies on magic to achieve his dastardly goals, he has often employed the use of various gadgets and potions as well such as the Babylonian Barbarian Boiler, the Cloning Machine and the Miniaturization Gas.

Mumm-Ra's main weapon however is the mighty Sword of Plun-Darr which he retrieved from the depths of New Thundera. This mighty double-bladed sword which was once wielded by Ratilla the terrible, has immense powers that rival those of the Sword of Omens.

ThunderCats Bullet Point Comics[]

Accoridng to the Wildstorm comic Thundercats Origins: Heroes and Villains #1, it is revealed that Mumm-Ra's real name was Wahankh before becoming undead. It was also stated that he tried to overthrow the current Pharaoh but failed and in return was imprisoned in a tomb for 600 years. The Spirits of Evil renamed him "Mumm-Ra" and had him build 4 statues in their likeliness, and afterwards gave him new power to overthrow his upcoming enemies, and he went on to live another 400+ years.

In the comics, Mumm-Ra's pyramid is often described as being an "Onyx" build pyramid, though that term is never used in any cartoon episode.

ThunderCats Bullet Point Gallery[]

ThunderCats Bullet Point Appearances[]

002. The Unholy Alliance
003. Berbils (episode)
006. Pumm-Ra (episode)
009. The Garden of Delights
012. The Doom-Gaze
014. The Spaceship Beneath the Sands
017. All That Glitters
018. Spitting Image
020. Mongor (episode)
021. Return to Thundera
022. Snarf Takes Up The Challenge
025. Lion-O's Anointment Second Day: The Trial of Speed
027. Return of the Driller
031. The Astral Prison
032. Queen of 8 Legs
033. Dimension Doom
035. The Rock Giant
036. The Thunder-Cutter
037. Mechanical Plague
038. The Demolisher
040. The Wolfrat
041. Excalibur (episode)
042. Lion-O's Anointment Fourth Day: The Trial of Mind Power
044. Sword in a Hole
045. Feliner - Part II
049. Lion-O's Anointment Final Day: The Trial of Evil
050. The Superpower Potion
051. The Evil Harp of Charr-Nin
052. Tight Squeeze
053. Monkian's Bargain
056. The Mountain
057. Eye of the Beholder
058. The Mumm-Ra Berbil
060. Mumm-Rana (episode)
061. Trapped
062. The Transfer
064. Dream Master
065. Fond Memories
066. ThunderCats Ho! - Part I
067. ThunderCats Ho! - Part II
068. ThunderCats Ho! - Part III
069. ThunderCats Ho! - Part IV
070. ThunderCats Ho! - Part V
071. Mumm-Ra Lives! - Part I
072. Mumm-Ra Lives! - Part II (as Ma-Mutt disguise)
073. Mumm-Ra Lives! - Part III
074. Mumm-Ra Lives! - Part IV
075. Mumm-Ra Lives! - Part V
076. Catfight
077. Psych Out
078. The Mask of Gorgon
080. Together We Stand
081. Ravage Island
084. Day of the Eclipse
088. Runaways
089. Hair of the Dog
091. ThunderCubs - Part I
092. ThunderCubs - Part II
093. ThunderCubs - Part III
094. ThunderCubs - Part IV
095. ThunderCubs - Part V
096. The Totem of Dera
097. The Chain of Loyalty
099. The Telepathy Beam (seen briefly in vision)
101. Key of Thundera
102. Return of the ThunderCubs
104. Locket of Lies
105. Bracelet of Power
106. The Wild Workout
107. Thunderscope
108. The Jade Dragon
110. The Last Day
111. Return to Thundera - Part I
112. Return to Thundera - Part II
113. Return to Thundera - Part III
114. Return to Thundera - Part IV
115. Return to Thundera - Part V
116. Leah
118. The Heritage
119. Screw Loose
120. Malcar
121. Helpless Laughter
124. Ma-Mutt's Confusion
125. The Shadowmaster
127. The Touch of Amortus
128. The Zaxx Factor
130. The Book of Omens

ThunderCats 1980s
Evil Characters Mumm-Ra | Ma-Mutt | Ancient Spirits of Evil | Slithe | Jackalman | Monkian | Vultureman | Ratar-O | Ratilla | Lunataks | Berserkers | Driller | Mongor | Queen Tartara | Two-Time | Grune | Malcar | Captain Shiner | Captain Cracker | Safari Joe | Enflamer | Ta-She | Shadowmaster | Zaxx Ratar-O Nav2
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