King Ghidorah

King Ghidorah (Titanus Ghidorah, Golden Demise, Monster Zero) is a giant three-headed space dragon that on numerous occasions attacked Earth and Godzilla and the other Earth Defenders. He is the main antagonist of the entire Godzilla film franchise as well as being the archenemy of Godzilla. He makes many appearances and in almost every iteration is stronger than even Godzilla.

Ghidorah, The Three-Headed Monster
In Ghidorah, the three-headed monster, Ghidorahs first appearance, Ghidorah is a monster controlled by aliens to destroy and conquer Earth. He beats Godzilla one on one, and Godzilla, Mothra, and Rodan have to help save the world. Mothra rides Rodan spraying the hydra with silk until he is almost fully blind and rendered useless, and Godzilla attacks his tails and body. They plummet into the ocean and Ghidorah retreats after losing totally.

Invasion of Astro Monster
In this Ghidorah is also put under mind control. He, Godzilla, and Rodan all are forced to attack the planet. there was a machine that was made by the humans to stop the kind control. Ghidorah is referred to as monster zero and is a little bit weaker than he was before, but not by that much. When the creatures are put of the mind control Godzilla quickly looks around and charges Ghidorah before he can even realize what is going on. He and Rodan constantly attack Ghidorah who is faring pretty good but must eventually retreat when he is once again almost dead.

Godzilla vs. Gigan
In this film and alien race once again takes control over a different Ghidorah who is weaker and not as good as the other Ghidorah. He teams up with Gigan under control and does not really put up much of a fight, and retreats with Gigan from Angurius and Godzilla. Ghidorah in this fights Godzilla and almost loses really easily. Proving that this Ghidorah is weak and basically useless.

Zone Fighter
In Zone fighter, Ghidorah is once again a destroyer of worlds and fights the zone fighter on an asteroid. Zone fighter tricks Ghidorah with a shield deflecting his own attack on himself and is almost killed by the Zone Fighter when he tackles and steeps on and breaks the necks of the monster and jumps on him and even shoots him with super guns. The near-dead Ghidorah retreats and is later captured to upgrade his gravity beam.

Destroy All Monsters
In Destroy all monsters Ghidorah is a secret weapon for an alien race. He battles many monsters at once and even though he seems invincible, he is easily overpowered by more than 6 monsters. Gorgosaurus kicks him on the floor where all the monsters kill each head one at a time. He is stomped on by Godzilla coughing up blood. One of his head is left breathing until it is strangled by manillas smoke breath. Kumonga and Mothra cover his corpse with silk.

Heisei Era
Three little creatures called dorats come together in a scheme made by people from the future to destroy japan. When they form together they destroy a city and are then ordered to kill Godzilla. Ghidorah seems to be winning while he is steeping on Godzilla, but is dismantled by the protagonist humans and gives Godzilla enough time to grab his tails and consistently lift him up and slam him down to the ground until Ghidorah is weak. Ghidorah in an attempt to strangle Godzilla gets tossed away and has his middle head severed. When he retreats, Godzilla blasts his damaged body in the wing, and he falls into the ocean nearly dead. He is revivalized a few hundred years in the future and goes back in time to stop Godzilla, who is rampaging Japan. Ghidorah is now partly metal and more heavy than before. He and Godzilla have a brawl and when Ghidorah is lifting Godzilla in the air with his new machinery, Godzilla blasts him and they both plummet to the ocean, leading in Ghidorahs total death, and Godzilla alive and well. Letting Godzilla celebrate over his victory, and be in a sequel, and Ghidorah to be in a cameo.

Rebirth of Mothra III
In Rebirth of Mothra, Ghidorah is known as the destroyer of worlds and has some handy new skills. He captures children in a dome to drain their energy, so Mothra Leo goes back in time to stop Grand King Ghidorah from getting powerful. When she meets the much younger Ghidorah, he is weak and not mature, so Mothra has the upper hand, and drops into a volcano, but his tail burrows in the ground to regenerate, and Mothra Leo stays back to heal. In the future, Ghidorah comes back because he regenerated to fight Mothra's greatest form ever, Armored Mothra. She emerges and they have a long battle. Mothra hits Ghidorah in the stomach and drags him away, then drops him giving him a disadvantage. Mothra then flys by Ghidorah shredding part of his wing. Ghidorah attempts to stop her, but she is the stronger Kaiju at the moment. She eventually, when Ghidorah is flying, uses a skill to soar straight through the hydra, and after a few moments, Ghidorah explodes into bits and pieces, leaving Mothra to cry for victory over the dead Ghidorah.

Post-Millennium Era
King Ghidorah in this ear is depicted as weak and unskilled. He is one of three guardians that attempt to battle Godzilla which backfires, to say the least. In the encounter, King Ghidorah and Mothra attack the larger than himself Godzilla, who bites his necks and throws him away like a can to crush and play with. Once Mothra dies, King Ghidorah gets stronger, and is almost successful in the battle, until Godzilla absorbs the energy for himself and blows up King Ghidorah with his own gravity beams made into atomic breath.

Godzilla Anime Trilogy
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Godzilla: King of the Monsters
In Godzilla: King of the Monsters, Ghidorah, also known as "the devil with three heads" is found frozen in a wall of ice at outpost 32 in Antarctica. A group of people are attempting to reawaken this monster with the Orca device, and in doing so he breaks from the ice, where he encounters Godzilla. The two have a short battle, and Ghidorah eventually flies elsewhere.

Physical description
King Ghidorah has gone through many changes in design since his original debut in 1964. His first appearance was as a large three-headed dragon covered in golden scales. He had no arms, but rather large, spoked wings unlike those of most dragons. He had two long tails that ended in spiked paddles, and his feet were flat and supportive. His heads were much like a horned, Chinese dragon, and even had a mane. Showa Ghidorah was 100 meters tall and had a wingspan of 150.

In 1991, in his Heisei appearance, His wings ended in sharper points was more of a true gold coloration and had snake-like eyes and necks. This incarnation was less bulky than previous and was seen to be smarter, too. Other designs, later on, were very similar to this, and the Desghidorah (prehistoric Ghidorah) design was dark red, and more dragon-esque. This new form had a height of 150 meters and a wingspan of 175.

In 2019, after a very long time since his last Toho appearance, his design has become more realistic and intimidating for the Monsterverse. His heads do not have a mane, but a crown of horns. His eyes are lava red and glow brilliant yellow when using his gravity beams, and they hold sentience. This new incarnation of Monster Zero has a bulky chest and digitigrade legs, and a ridge of small spines along his back and necks. His middle neck has two rows of spines. The two tails end in the flat spiked club, but now have the ability to rattle, much like a rattlesnake. His wings are very similar to a bat's and are extremely large in comparison to the rest of his body, giving him a massive wingspan. The scales covering his body had trace amounts of gold, and as a result he had electromagnetic abilities such as gravity beams (concentrated electricity beams), the ability to drain energy from other titans, and projecting lighting from his fingers. His height is 521 feet, and his wingspan is around 1500 feet wide.

Kingdom of Monsters/Rulers of Earth
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Gangsters and Goliaths
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The Half-Century War
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Cataclysm
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Godzilla In Hell
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Oblivion
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Godzilla, King of the Monsters (Kodansya Manga Series)
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The Godzilla Comic Raids Again
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Abilities
King Ghidorah has had a number of changes made to himself over the years, but most of his traditional battle characteristics have remained the same.

Breath weapons
Different incarnations have different types of attacks, some of which aren't used quite the same in battle. King Ghidorah, in most incarnations, is able to fire off powerful beams of what looks like electrical bolts of energy from each mouth, referred to as "gravity beams."
 * The gravity beams live up to their name in Zone Fighter and Godzilla: Final Wars, where they were able to lift opponents and objects off the ground and throw them around or bring them closer.
 * The beams were simply bolts of concussive thermal energy in GMK, where King Ghidorah fired bolts of electricity.
 * In Godzilla vs. King Ghidorah, after being converted into a cyborg, Mecha-King Ghidorah was able to fire a spiraling energy blast from his robotic head.
 * In Rebirth of Mothra III, Cretaceous King Ghidorah had fire breath instead of the regular energy bolts but this is likely because he was in his younger undeveloped form.

Wing lightning

 * In Rebirth of Mothra III, King Ghidorah was able to project six bolts of lightning from each of his wings.
 * In Godzilla: King of the Monsters, King Ghidorah was able to do this after draining energy from a substation.

Golden armor
Ghidorah has armored scales that provide him with some degree of protection. However, it does not guarantee total invulnerability.
 * The Showa era King Ghidorah's scales made him almost immune to energy attacks, but seemed to do little else. In Invasion of the Astro-Monster, Ghidorah withstood several blasts of Godzilla's atomic ray with no ill effects. In Destroy All Monsters, Anguirus used his tusks and fangs to lacerate one of the monster's necks.
 * In Godzilla vs. King Ghidorah, Godzilla was able to use his atomic ray to sever one of Ghidorah's necks and burn a hole through his left wing. Ghidorah's scales would later be augmented by cybernetic armor when he was reconstituted as Mecha-King Ghidorah.
 * Desghidorah's black scales appeared to be a tough armor that could shrug off all but the strongest attacks, not just energy attacks but physical attacks as well.
 * In Rebirth of Mothra III, King Ghidorah had scales that were reflective and repelled even the strongest of Mothra Leo's attacks. However, when Leo reached his final armored form he was able to cut off one of Ghidorah's wings and finally completely destroy him with an energy tackle through the monster.
 * In Godzilla Mothra King Ghidorah: Giant Monsters All-Out Attack, Godzilla drew blood as he bit down on one of King Ghidorah's necks. At the end of the movie, Ghidorah is incinerated by a point-blank blast of Godzilla's supercharged atomic ray.

Hurricane winds
King Ghidorah is able to create hurricane-strength winds by standing and flapping his wings, or by gliding over an area at a low altitude. Ghidorah can reach interplanetary velocities, although his atmospheric speed was said to be approximately Mach 4 in Godzilla vs. Gigan (this may represent a comfortable maneuvering speed for the monster).
 * This ability is further demonstrated in the TV series Zone Fighter, with King Ghidorah using his wings to create hurricane winds during his battle with Zone Fighter on Earth, which he used to great effect and led to Zone Fighter challenging him on the planet Jupiter to prevent Ghidorah using this power.
 * In Godzilla: King of the Monsters, Ghidorah is able to naturally generate a storm around him that resembles a hurricane.

Life force absorption
With the exception of GMK, King Ghidorah's various incarnations after 1995 each possessed the ability to drain an enemy's life force to be harnessed for the monster's own use; although the method varies depending on the particular version.
 * In Rebirth of Mothra III, King Ghidorah could create a pulsating dome that absorbed the life force of whatever was encased within. After depleting a planet of its life force, these energies would be materialized around Ghidorah as a cocoon with which it would use to propel itself through space towards a new planet.
 * Keizer Ghidorah was able to drain life force directly through its bite attack.
 * In Godzilla: King of the Monsters, King Ghidorah briefly used this ability after Mothra's sacrifice as it bit into a weakened Godzilla and began to drain his energy before been lured away by the ORCA.

Assorted other abilities

 * The Showa-era King Ghidorah had the ability to generate magnetic fields, a power Godzilla imitated in Godzilla vs. Mechagodzilla in 1974. While the fields' purpose was never stated, it was said that they were somehow connected to his powers. It is possible that he used them as a form of levitation.
 * In Godzilla vs. King Ghidorah, King Ghidorah could use his powerful necks to strangle Godzilla. After being reconstituted as a cyborg, Mecha-King Ghidorah lost that ability but was equipped with several electrified manacles and the G-grasper, a mechanical harness mounted on its chest plate.
 * In Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack, King Ghidorah's immature form possessed an electrified bite. Its fully energized form was capable of generating a force field that absorbed the energy of an opponent's attack, combined it with that of King Ghidorah, and then discharged it back towards its enemy.
 * In Rebirth of Mothra III, King Ghidorah appeared to have a range of psychic abilities allowing it to teleport small objects and control minds, and telekinetic capabilities strong enough for Ghidorah to levitate himself.
 * In the Manga series Godzilla, King of the Monsters, King Ghidorah (this version known as King Ghidorah III) had the ability to turn invisible. He was killed during his fight with Godzilla, who used his nuclear pulse to blow off two of his heads - which were later used to help create King Godzilla.
 * In the Showa and Heisei eras King Ghidorah showed extreme hatred towards Godzilla and vice versa. This could suggest the intellect to understand rivalry. Monsters in the Showa era were known to have near-human to human level intellect and, in Ghidorah, the Three-Headed Monster, the Kaiju are known to be able to communicate with one another, which may explain this behavior in the Showa era films.
 * In Godzilla: King of the Monsters, King Ghidorah was shown as been able to regrow one of its severed heads after it was torn off in its fight with Godzilla.

Initial ideas on his past
Initially, King Ghidorah was said to have come from outer space, an ancient evil responsible for destroying many planets, including Venus (or Mars in the US version of Ghidorah, the Three-Headed Monster). Though his origins in the Godzilla series are left enigmatic, a later appearance in episode five of Zone Fighter he was claimed as a creation of the warlike Garoga aliens. Arriving on Earth in a magnetic meteorite, Ghidorah devastated much of the Japanese countryside before being repelled by the monstrous team of Godzilla, Mothra, and Rodan. In the follow-up movie, Invasion of the Astro-Monster, it was revealed to be a mind-controlled pawn of beings from Planet X, a newly discovered planet in Jupiter's umbra, who called it "Monster Zero". These "Xilians" coveted Earth's water resources and took control of Godzilla and Rodan in an attempt to conquer Earth. Earth intervened by freeing the monsters, and after a fight with Godzilla and Rodan, King Ghidorah flew back into space.

King Ghidorah made two more appearances in the Shōwa Series, both times as an agent of alien invaders. In Destroy All Monsters, controlled by the Kilaaks, it fought and was killed by the combined might of ten of Earth's daikaiju. There is some confusion around this event because inGodzilla vs. Gigan, King Ghidorah returns. However, Destroy All Monsters was set in the year 1999, while Godzilla vs. Gigan is set in the 1970s. So, chronologically, Destroy All Monsters takes place after Godzilla vs. Gigan, and is the last film of the Showa series, instead of Terror of Mechagodzilla.

Ghidorah also appeared in two episodes of the tokusatsu superhero TV series, Zone Fighter. He appeared in two back-to-back episodes, and was one of the few monsters to survive defeat at the hands of Zone Fighter.