Icon-dt.pngThis article is about a/an villain in Power Rangers Dino Thunder.
Crystal Clear User.png This character is also known as the adoptive father of Trent, Anton Mercer

"Find him. Whatever it takes."
―Mesogog's first words when addressing the Tyrannodrones (whilst in shadows) and ordering them to find Tommy.[src]

"You destroyed my plans of creating a perfect world. However, I was able to absorb enough Dino Gem energy to complete my transfiguration. Witness the face of your final battle."
―Mesogog's final speech before turning into the Mesomonster.[src]

Mesogog was a humanoid dinosaur-like being and the main antagonist of Power Rangers Dino Thunder. He was the monster-form of Anton Mercer. Mesogog was both the sworn enemy of the Dino Rangers and a psychopathic and sinister terrorist that wanted to conquer the world and return it to the era of dinosaurs.



Mesogog is born during a scientific experiment.

Anton Mercer was on the verge of a scientific breakthrough during an experiment involving dinosaur DNA, when he was accidentally transformed into Mesogog, an evil mastermind with plans to revert the earth to the age of dinosaurs and turn the human race into reptilian creatures like himself. As a result of the accident Mesogog and Dr. Mercer were distinct personalities with the same body in a Jekyll-Hyde relationship. Each is aware of the other's existence, but also both dislike their situation (Dr. Mercer, for having a villainous alter-ego that he can barely control and Mesogog, for having a human half holding him back). In his Mesogog form, he was equipped with cybernetic technology and psionic powers that he uses to torture his enemies. Tvicon.png TV STORY-Copy That

Mesogog commands the Tyrannodrones.

In order to enact his plans, Mesogog seized the Tyrannodrones, who were part of a dinosaur-related project that Tommy Oliver and Anton were making along with the Raptor Riders and the Biozords. When Tommy Oliver went to the island where Anton Mercer's Lab was, Mesogog sent the Tyrannodrones in an attempt to capture and/or kill Tommy while he also destroyed the island itself, during the explosion some of their experiments were scattered across the outskirts of Reefside (incluiding the eggs of some dino creatures), Tommy managed to escape and believed that Mesogog died in the explosion when in reality he went into hiding for a few years. Tvicon.png TV STORY-Day of the Dino

After the island where Anton Mercer's Lab was sank beneath the sea, Mesogog brought it back in order to serve as his headquarters for the future. Mesogog eventually came across the body of Terrance "Smitty" Smith, who was a partner of Tommy and was grievously injured by an explosion at his lab. He rebuilt him with cybernetic technology into a black armored cyborg who would later be known as "Zeltrax". Tvicon.png TV STORY-Bully for Ethan At some point Mesogog also captured a woman named Elsa and empowered her to serve him. Mesogog also learned that Anton Mercer had an adopted son, Trent, who would prove to be useful in the future.

Getting the Gems

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Years later, in 2004, Mesogog resurfaces after three high-school students recover the Dino Gems, sending his Tyrannodrones to catch the students and recover the Gems for him. After the three students manage to beat Mesogog's army thanks to their new powers given by the Gems, Mesogog sends his Tyrannodrones one more time to capture one of the three students, this time he succeeds and captures Kira Ford. Mesogog meets Kira and asks her where are the Dino Gems but she tells her that she gave them away. Unfortunately for Mesogog, Kira then gets into a tussle with his henchwoman Elsa as she tries to run away from her and Zeltrax, finding an Invisiportal and getting away.

Mesogog punishing Zeltrax and Elsa.

The next day, Mesogog orders an attack on Reefside, freeing the Biozords so they can begin their rampage through the city streets. Zeltrax then arrives with his ship and begins his attack as commanded by Mesogog but Tommy Oliver and his three students show up, they then morph into the Dino Rangers, the Rangers then defeat the Tyrannodrones and Zeltrax. The Dino Rangers tame the Zords, form the Thundersaurus Megazord and destroy Zeltrax's ship with their Tyranno Drill. When Zeltrax returns to the Island Fortress, Mesogog punishes him and Elsa for their failure with a psionic brain-blast and warns them as a lesson that he doesn't take defeat lightly. Tvicon.png TV STORY-Day of the Dino

Mesogog kidnaps Tommy Oliver.

After Mesogog realizes that Tommy found three eggs containing the unborn Raptor Riders, he orders to initiate the Geno-Randomizer and create a monster so he can stop Tommy from training the new dino creatures, unfortunately he's unsuccessful as Tommy manages to train the Raptor Riders and send them to aid the Rangers, who then quickly destroy his monster. Mesogog later finds a mysterious energy crystal stone that contained some great power but couldn't find a way to open it, so he sends his army to kidnap Tommy Oliver so that he can forced him to help him open the stone. Tvicon.png TV STORY-Wave Goodbye Mesogog tortures Tommy by draining him with his life-force extractor while telling him that his goal was returning Earth to its prehistoric roots, when Tommy (who asks why Mesogog can't settle for world domination like all the other villains, although the prehistoric reversion may be his own method of doing so) continues to refuse helping Mesogog, he keeps draining his life. Tvicon.png TV STORY-Legacy of Power

Mesogog fights Tommy Oliver.

Just as Mesogog gives Tommy an ultimatum, the Ranger later go to his fortress in their Raptor Cycles to rescue Tommy. Mesogog meets the three Rangers in his fortress but is stopped by his lackeys, though he and his army later confront the Rangers as they just freed Tommy from his captivity, with Mesogog taking on Tommy himself and beating him until he managed to steal the stone and run away with the Rangers through an invisiportal. When his lackeys follow the four heroes, Tommy uses the stone to block one of Zeltrax's attacks, revealing the stone to be the Black Dino Gem, which lets him transform into the Black Dino Ranger, adding a fourth Ranger to Mesogog's enemies. Tvicon.png TV STORY-Back in Black

Thunder Storm

Mesogog, Elsa, and Lothor in Mesogog's lab in PRDT Thunder Storm

For some reason, Mesogog believed his first assault on Reefside would be credited to Lothor. It was never revealed if somebody actually suspected Lothor was involved with that. Mesogog eventually overcame his prejudices and teamed-up with Lothor when he discovered that he had "Evil Power Rangers". Mesogog was not fully allied with Lothor, because he did not trust him completely. When Lothor and Mesogog's team-up idea failed, Mesogog betrayed Lothor and shrunk him inside of a jar to add to his collection of experiments. (Lothor and his jar were presumably destroyed with Mesogog's lab at the end of the series.) However, Mesogog had previously told Elsa he already intended to get rid of Lothor even if the team-up resulted in a success. Tvicon.png TV STORY-Thunder Storm

Eventually Mesogog freed himself of his humanity by using a potion to separate out Dr. Anton Mercer. As a result, his insanity and determination increased. He also rid himself of Elsa when needing an energy supply to power his cannon. It took a bit of deception from the Rangers (using the Dino Gems as bait) to destroy the cannon and Mesogog's base. He would later reappear after the Zords were destroyed as well as after Zeltrax's death and Zelzord's destruction, absorbing enough energy from the Dino Gems to survive the explosion and 'evolve' into a self-replicating dinosaur-like monster, known as the Mesomonster. The Mesomonster was far stronger then any other opponent the Dino Thunder Rangers had faced, even surviving the Triassic Battlizer's Battle Blast before replicating. With no options left, the Rangers combined all of their Dino Gem energy to form a T-Rex of pure golden energy. With the Rangers holding the four Mesomonsters in place with beams of golden energy, the Rex charged forth and munched down on the monsters. The Rangers spun around and posed as the Rex exploded behind them, taking Mesogog out once and for all.

Despite this ordeal, Dr. Mercer fortunately survived the whole ordeal, and was thankful to the Rangers (especially Tommy) at the series' end.


"It's demented. I love it."
―Mesogog after hearing Elsa's plan.

Mesogog (whilst mostly calm) was a villainous, cruel, cynical, sadistic, sinister, cold-blooded, psychopathic, monstrous, and ruthless terrorist that did anything in his power to ensure his dream of bringing the Earth back into the age of the dinosaurs. Mesogog was also highly authoritative and aggressive, as Elsa and Zeltrax feared him, enough to obey any order from him and try not to incur his wrath. He was also very abusive, oppressive, and merciless towards his minions, and punished them by telepathically attacking them if they failed him. Mesogog hated the Power Rangers and stopped at nothing to destroy them. Despite his villainous tendencies, he also had a mature, polite, and sophisticated side although his politeness seemed more like hatred and abuse on his victims with it being kept as a facade for the sake of mocking them. Along with his sophisticated side, he had a very deadpan, cynical, and charmingly sarcastic sense of humor, making jokes or snide comments about other people whenever he felt like it. Mesogog was a very intelligent, manipulative, deceptive, and knowledgeable mastermind and could create very advanced technology and use them for his own benefits. He was also shown to be quite devious and an excellent master manipulator that could influence people all too well if he knew their weaknesses. He was also very confident, later heightened to arrogance, egomania, and narcissism, all of which were ironically his main weaknesses which led to his defeat by the Dino Rangers.

Mesogog had a considerable amount of hatred for his human counter-part, Anton Mercer, as much if not even more so than the Rangers. Mesogog had expressed sheer disgust for Mercer's kind and generous nature, with the latter always willing to help humanity. Like Elsa, Mesogog knew that Mercer was a weakness, but not solely because of his vulnerability as a human vessel; Mesogog also saw Mercer as an inconvenience and unnecessary influence over his actions that often kept Mesogog from completing his plans.

As a result of removing Mercer from his being, Mesogog's behavior took a more terrifying turn. No longer influenced by Mercer's humanity, elements of Mesogog's calm and stable psyche was all but shattered. What was left was a much more twisted, sadistic, and perhaps most notably, animalistic version of his former self. He took endless joy in tormenting Mercer, and was quick to make his minions expendable as seen when he sacrificed Elsa and her powers in order to supply energy to his transfiguration cannon with absolutely no hesitation or remorse. He still maintained his insane desire to return the world back to the era of the dinosaurs.

As the Mesomonster, Mesogog was far more destructive, monstrous, and violent. Having lost nearly every bit of sense in this form, he didn't talk, only speaking in growling noises, laughs, and roars.



Powers and Abilities


  • Power Bestowal and Enhancement: Mesogog was able to give Elsa her powers and increase them to add her to his cause.
  • Laser Vision: Mesogog's main ability where he could fire clear yellow energy lasers from his eyes.
    • Teleportation Cast: Mesogog's eye lasers were able to pull Zeltrax, Elsa, and Pollinator into the Island Fortress despite them being on the beach outside of Reefside.
    • Pain Inducement: Mesogog's laser vision could also inflict massive pain on the opponent's head.
  • Forehead Psionic Beam: By focusing energy, Mesogog could fire an orange or red psionic beam from his forehead that could torture his targets.
    • Container Imprisonment: Mesogog's psionic beam can imprison anything in containers, as seen when he trapped Lothor inside a water-filled bottle.
  • Forceful Takeover: Being created from Anton Mercer, Mesogog could force control away from his human host at will, but he lost this ability and no longer needed it after separating himself from his host.
  • Invisiportal: Mesogog was able to use an Invisiportal to teleport between Reefside and his Island Fortress.
  • Monster Creation: Mesogog could create monsters on his own even without the Geno-Randomizer, as seen when he fired blue and purple energy streams at a plant to turn it into the Jade Gladiator.
  • Energy Absorption: Mesogog could absorb energy from the Dino Gems in order to transform into his second form.
    • Mutation: Upon absorbing all of the Dino Gem energy, Mesogog could mutate into his ultimate form at will.


  • Power: As the absolute antagonist in Dino Thunder, Mesogog was stronger than any monster or villain in the entire season including Lothor and Super Zeltrax.
  • Strength: In the final part of the two-part team up episode "Thunder Storm", during his battle with Lothor, Mesogog demonstrated immense physical strength, since he was able to easily lift Lothor over his head and toss him a very far distance.
  • Durability: Mesogog had thick skin that is quite durable as shown during his battle with Lothor where the evil ninja's energy lasers had no effect on him. However, his most impressive display of power was when he survived the destruction of his own Island Fortress without a scratch despite being right in the middle of it.
  • Expert Hand to Hand Combatant: While Mesogog tended to rely more on his psionic abilities, he was exceptionally lethal in hand to hand combat. This was best demonstrated when he was able to match Lothor, a master ninja capable of easily defeating several martial arts masters, in a fight that ultimately ended with him as the victor.
  • Robotics Expert: Mesogog was also an expert in the robotics field since he was the one who rebuilt Terrence Smith as Zeltrax.


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  • Claws: Whilst being the only main villain to lack a weapon, Mesogog had razor sharp claws to use in order to fight his enemies.
  • The Hydro Regenerator: Mesogog operated a rain cloud system known as the Hydro Regenerator which can grow monsters with its rain.
  • The Geno-Randomizer: Mesogog also operated a special system known as the Geno-Randomizer which can create monsters.
  • Separation Potion: Mesogog used a potion that can split Anton Mercer from him after drinking it.
  • Transfiguration Cannon: Mesogog used a mighty cannon as part of his endgame to try and turn the entire human race into human and dinosaur hybrids.
    • Power Absorption: The cannon was able to absorb Elsa's powers to fully work.
      • Teleportation Cast: After absorbing Elsa's powers, the cannon immediately teleported her away.


Powers and Abilities


  • Mouth Lightning Balls: The Mesomonster could fire powerful blue lightning balls from his mouth.
  • Shockwave Generation: The Mesomonster was able to generate strong white or orange shockwaves from his body.
  • Tongue Lash: The Mesomonster could stretch his tongue to great lengths to grab the other Rangers.
  • Self-Duplication: The Mesomonster had the ability to make multiple copies of himself by splitting his DNA in half and morphing his body up to at least four times.


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  • Claws: The Mesomonster retained his claws for combat but they were much sharper.
  • Tail: The Mesomonster had a new thick tail to whip and bash his foes quite effectively.

Behind the Scenes



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  • Mesogog was not derived from Abaranger and was an American exclusive villain.
    • This was because Abaranger’s main villain, Wicked Life God Dezumozorlya was barely in the series since he was a parasite possessing other very Japanese beings.
  • After separating from Anton Mercer, Mesogog's voice lost its lower pitch, becoming more of a hissing sound.
  • Messogog might have been one of the most powerful villains in the franchise, being able to overwhelm all the Dino Rangers on every encounter and was able to defeat another very powerful main villain (Lothor) without breaking a sweat.


Power Rangers Legacy Wars

Mesogog as seen in Legacy Wars

Mesogog is among the villains who feature in Power Rangers Legacy Wars, he is an Epic (Leader), Legendary (Assist) character.

See Also


Power nav icon.png Power Rangers Dino Thunder Icon-dt.png
Conner McKnight - Ethan James - Kira Ford - Tommy Oliver - Trent Fernandez-Mercer
Dino Gems - Dino Morpher - Brachio Morpher - Drago Morpher - Triassic Morpher - Triassic Battlizer Morpher - Thundermax Saber - Tyranno Staff - Tricera Shield - Ptera Grips - Brachio Staff - Drago Sword - Z-Rex Blaster - Super Dino Mode - Shield of Triumph - Triassic Battlizer - Raptor Riders - Raptor Cycles - Dino ATVs - Hovercraft Cycle - Triceramax Command Center Truck
Hayley Ziktor - Sensei Kanoi Watanabe - S.P.D. Rangers - Cassidy Cornell - Devin Del Valle - Anton Mercer
Ninja Rangers: Shane Clarke - Tori Hanson - Dustin Brooks - Hunter Bradley - Blake Bradley - Cameron Watanabe
Zords and Megazords
Tyrannozord - Tricerazord - Pterazord - Brachiozord - Dragozord - Stegozord - Cephalazord - Dimetrozord - Parasaurzord - Ankylozord - Mezodon Rover
Thundersaurus Megazord - DinoStegazord - Mezodon Megazord - Triceramax Megazord - Valkasaurus Megazord
Mesogog - Elsa - Zeltrax - White Ranger Clone - Tyrannodrones - Triptoids
Evil Space Ninjas: Lothor - Izzy & Pupperazi - Zurgane - Kelzaks
Aerial Assault Craft - Birdbrain - Pollinator - Donkeyvac - Demagnetron - Dysotron - Goldenrod - Scorpex - Megalador - Creature - Angor - Rojobot - Insectolite - Fossilador - Termitetron - Ka-Ching - Mad Mackerel - Copyotter - Other World Monster - White Terrorsaurus -Terra Assault Craft - Jupitor - Tutenhawken - Thornox - Deadwood - Horn-Rimmed Monster - Jade Gladiator - Skortch - Squidrose - Croco D'Vile - Rumba Monkey - Rude Elf - Fridgia - Ruby Dragon - Ugly Monster
Zords: Replicantzord - Zelzord