Gyaos (ギャオス,   Gyaosu?) is a vampire bat-like pterosaur kaiju created by Daiei and the titular main antagonist of the Gamera franchise that first appeared in the 1967 Gamera film, Gamera vs. Gyaos.



Gyaos resembles a giant pterosaur or bat creature, with a flattened, arrow shaped head, leathery wings with three claws on each, taloned feet and a flat tail. It is reddish brown in both incarnations. The Gyaos in Gamera: Guardian of the Universe had a more streamlined appearance, with larger wings and a longer neck, as well as red eyes after its evolution in Tokyo. Space Gyaos, as seen in Gamera vs. Guiron, sports silver scales and has sickly yellow eyes with red pupils. This extraterrestrial variant of Gyaos also has purple blood, as seen when Guiron gores a space gyaos.

In Gamera 3: Revenge of Iris, Gyaos is significantly different from the previous Heisei incarnation, with a long neck and thinner jaws. The top of the head is no longer as flat, and the face looks more skeletal. The hands are now on the end of the wings, which are also smaller. The creature is also thinner, with shorter legs and tail.


In the Showa series, Gyaos has no definitively explained origin, and is discovered living in a large cave. In Gamera vs. Guiron, it is revealed that there are multiple silver space-faring Gyaos, suggesting that Gyaos may be an extraterrestrial species, or that there are multiple species of Gyaos specific to other planets. These silver Space Gyaos seem to lack the weakness to sunlight of the black-hued earth variety.

In the Heisei trilogy, Gyaos are the result of genetic engineering by the ancient Atlanteans in order to create a genetically perfect organism, possibly as a weapon. However, the asexually-reproducing Gyaos began breeding out of control and turned on their creators. The Atlanteans created Gamera as a last-ditch effort to stop the Gyaos, but their civilization was ultimately destroyed by the Gyaos. While Gamera successfully destroyed most of the Gyaos, several clutches of their eggs survived into the present day and were able to hatch due to human activities causing a decrease in the Earth's levels of Mana.


Showa Series

Gamera vs. Gyaos

Gyaos in Gamera vs. Gyaos

In Gamera vs. Gyaos, Gyaos appeared in Japan from a large cavern, and feasted on blood, principally that of livestock and humans. Soon, Gamera confronted Gyaos, and after a battle, Gyaos was forced to flee, and Gamera was forced into the ocean to recover. It is soon learned that light causes Gyaos' skin to shrink, so the light of the city stadium of Nagoya kept Gyaos at bay. Gamera soon returned to finish Gyaos off and, after a battle in the air, Gyaos cut off his own foot to escape from the sun.

The protagonists developed a plan to place artificial blood on a rooftop in Nagoya. The plan was to keep Gyaos drinking the blood for so long that the sun would come up and kill him, while a rotating platform would make him too dizzy to fly away and eventually burn in the sun. But Gyaos proved more cunning than originally thought and expelled a yellow fog attack from two nozzles in his armpits to protect himself from the sun (as well as put out the fires in the engine room). The next plan was to lure Gamera to Gyaos' lair in the forest by setting the forest alight. Gyaos used his fog attack to put out the flames, but Gamera arrived and eventually defeated Gyaos, wounding him many times and biting his throat, leaving him unable to escape the sunrise. Weakened by the light, Gyaos collapsed and Gamera finished him off by throwing the beast into Mount Fuji.

Gamera vs. Guiron

Space Gyaos in Gamera vs. Guiron

A silver Space Gyaos (宇宙ギャオス,   Uchū Gyaosu?) appeared briefly in Gamera vs. Guiron, as a victim of Guiron. A swarm of Space Gyaos had attacked the planet Terra, an undiscovered planet in our solar system, being kept at bay only by the Terrans' guardian monster, Guiron. A Space Gyaos arrived near Guiron and tries to attack, but Guiron, using its blade-head to reflect Gyaos' beams, severs one of its legs which sends it fleeing. As it tried to fly away, however, Guiron leaped up and sliced off its wing, causing it to crash, after which Guiron proceeded to mercilessly slice up the defenseless creature like a Christmas ham. After Gamera had killed Guiron, the planet was seemingly abandoned to the Gyaos.

Gamera: Super Monster

Stock footage of Gyaos was later featured in the Showa series recap Gamera: Super Monster along with the other Showa era Gamera kaiju.

Heisei Series

Gamera: Guardian of the Universe

Super Gyaos in Gamera: Guardian of the Universe

Three Gyaos appeared on an island archipelago on the coast of Japan, where they wiped out entire villages, eating every human being they could find. Ornithologist Mayumi Nagamine and police inspector Osako were sent to the islands to investigate, where they saw the three creatures up close. Together with the J.S.D.F., Nagamine and Osako formulated a plan to lure the Gyaos to the Fukuoka Dome in Fukuoka, using hunks of raw meat laced with tranquilizers. By nightfall, the three Gyaos arrived at the stadium and descended. The stadium lights were activated in order to trap the Gyaos, which had an aversion to light. Two of the Gyaos were sedated and captured, but one escaped. The Gyaos tried to fly over the ocean, but was suddenly swatted into a nearby refinery and destroyed by Gamera, who proceeded towards the Fukuoka Dome. The two Gyaos awakened and used their sonic beams to cut free of the cages restraining them. The Gyaos flew out of the stadium, avoiding Gamera, and retreated.

The two Gyaos later attacked a village in the Japanese countryside, but were intercepted by Gamera. Gamera destroyed one of the Gyaos with a fireball, but the other escaped. When Gamera was attacked by the J.S.D.F. near Mount Fuji, the surviving Gyaos attacked him with its sonic beam. Gamera was seriously wounded by the J.S.D.F. and Gyaos' attacks and was forced to rest underneath the ocean. Gyaos began feeding on wildlife, livestock, and humans and eventually grew into the 85 meter-tall Super Gyaos (スーパーギャオス,   Sūpā Gyaosu?). Super Gyaos flew to Tokyo, where it fed on the helpless populace. Super Gyaos later built a nest on the Tokyo Tower and laid eggs. Gamera traveled underground and surfaced in the center of Tokyo to challenge Super Gyaos. Gamera blasted the nest with a fireball, destroying all of the eggs. Super Gyaos and Gamera fought throughout Tokyo, causing major damage to the city. Eventually, the two kaiju took their battle to the sky, engaging in a supersonic dogfight that reached the top of the atmosphere. Gamera and Super Gyaos plummeted down to Earth, and Gamera crashed into a factory which exploded. Super Gyaos stared at the fireball, believing itself victorious, when suddenly the fire was absorbed by Gamera, who stood unharmed. Gamera fired a massive fireball at Super Gyaos, which blasted its head clean off. Super Gyaos' headless corpse then fell backwards and exploded.

Stock footage of Super Gyaos and its battle with Gamera was later shown in Gamera 3: Revenge of Iris, where it is revealed to be the cause of the death of Ayana Hirasaka's parents.

Gamera 2: Attack of Legion

The Gyaos do not appear in Gamera 2 physically, but they are mentioned and are the subject of a book in the film.

Gamera 3: Revenge of Iris

Hyper Gyaos in Gamera 3: Revenge of Iris

After Gamera's Ultimate Mana Blast attack used to destroy Legion depleted the Earth's Mana, thousands of Gyaos began appearing all over the world in new evolved forms known as Hyper Gyaos (ギャオス・ハイパー,   Gyaosu ・ Haipā?, lit. Gyaos Hyper). The corpse of one Gyaos was found in a village in the Philippines, where it had eaten an old woman's son and grandson. Gamera was reportedly seen in several locations across the planet battling the Hyper Gyaos, causing terrible destruction in the process. One night, two Hyper Gyaos appeared in the Shibuya district of Tokyo, where they battled Gamera. Gamera killed both Gyaos, but at the cost of thousands of human lives, ending humanity's trust in Gamera and causing them to designate him as an enemy. Meanwhile, a powerful creature related to the Gyaos, Iris, was awakened from a shrine in Nara Prefecture and raised by the vengeful orphan Ayana Hirasaka to kill Gamera, who she blamed for the deaths of her parents in 1995. Iris and Gamera battled in Kyoto, with Iris being killed and Gamera brutally maimed. After the battle, a swarm of thousands of Hyper Gyaos approached Kyoto, intent on finishing Gamera once and for all. However, humanity's faith in Gamera had been restored and they were ready to fight side-by-side with him against the Gyaos.

Gamera: The Brave

Gyaos in Gamera: The Brave

The Gyaos also appeared in Gamera: The Brave, called Original Gyaos (オリジナルギャオス,   Orijinaru Gyaosu?), where a flock attacked a small village, only to be stopped by Gamera, who sacrificed himself to destroy the flock. Supplementary materials for the film reveal that Zedus was later mutated from eating the corpses of Gyaos.


Gyaos in the 2015 NYCC footage for the upcoming Gamera film

Gyaos appears in the New York Comic-Con footage for the upcoming Gamera film. Swarms of Gyaos are shown attacking Tokyo ten years in the past, and one of them eats the main character's father. The main character is saved when Gamera smashes through a building and kills the Gyaos by stomping on its neck. Gamera then destroys the incoming swarm of Gyaos with a powerful blast of fire.[1]

City Shrouded in Shadow

Gayos appears in the City Shrouded in Shadow. While general appearance strongly resembles that of immature gyaos in 1995, they have grayish coloration around jaws and have vivid fin -like projections along spines much like in the 2015 Comic-con footage. Infants can stand bipedally.


Video Game Appearances


Manga Boys Special Edition: Gamera

Gyaos battling Gamera in Manga Boys Special Edition: Gamera

Gyaos appears in this 1995 manga illustrated by Hurricane Ryu Hariken, along with several other kaiju. Eventually, Gyaos merges with all of Gamera's other foes from the Showa era into a chimera-like creature called Powered Gyaos, which is defeated by Gamera.

Gamera: The Guardian of the Universe

Gyaos battling Gamera in Dark Horse's Gamera: The Guardian of the Universe

Gyaos appears in the first issue of Dark Horse's four-issue comic sequel to Gamera: Guardian of the Universe, where it is cloned from Super Gyaos' DNA and battles Gamera once again. In a later issue, DNA from the original Super Gyaos is experimented on in order to create bio-weapons, resulting in the creation of Viras.

Gamera vs. Barugon

Gyaos in Kadokawa's Gamera vs. Barugon manga

In Kadokawa's manga adaptation of Gamera vs. Barugon, set between the events of Gamera 2: Attack of Legion and Gamera 3: Revenge of Iris, Gamera does battle with a horde of Gyaos after defeating the Mother Legion.

Gamera 2006: Hard Link

The Gyaos attack Gamera in Gamera 2006: Hard Link

In the spin-off manga to Gamera: The Brave, Gamera's battle against the Gyaos in 1973 is gone more into detail within the "Special Link" chapter.

Gamera is being attacked by four Gyaos' sonic beams. Gamera kills a first Gyaos with a point-blank fire blast and then stomps on its head. The remaining three Gyaos keep firing at Gamera, but Gamera gets in his shell and charges up a fire blast which he fires at one of the Gyaos. Another Gyaos comes in and bites Gamera's arm, and Gamera throws it to the ground and fires at it, killing it. The two remaining Gyaos hover about, and Gamera fires another fire blast at one of them. From the smoke the Gyaos flies toward Gamera and unleashes a flurry of beams. Gamera punches it to the ground. However, the Gyaos continues its onslaught of beams just as the other Gyaos turns out to have survived and flies over to Gamera. Gamera begins spurting blood, and the two Gyaos feast on Gamera's entrails. Gamera, acknowledging he's been defeated, triggers his Fireball Ejection Suicide, killing both him and both Gyaos.

Other characteristics

Stracture of gyaos' nest within the Mt.Fuji.

Close up view of the "larva".

The most notable feature among the biology of showa gyaos is that gyaos, despite with the looks of vertebrate, has a form of "larva" as an infant, somewhat resembling both kamacuras and meganulon. Either single or pack(s) of gyaos also create structured nest under the mount of Fuji which have structures being similar to those of moles and rodents, holding communities and infrastructures including a "graveyard". In this case, gyaos moved from the fossa magna to the mountain. The fact gyaos inhabit a volcano despite being not immune to magma, is very close to the habitat chose by rodan.


In both incarnations the Gyaos have been shown to be astonishingly capable flyers, able to fly incredibly fast and perform agile aerial maneuvers with ease. Also, both Showa and Heisei versions have been able to spit an amazingly precise beam from its mouth, which is actually created by the Gyaos' supersonic scream, apparently able to resonate at 3 million hertz and slice objects into halves. Although they are nocturnal, the Gyaos can overcome the sun by emitting a fog-like gas to obscure the sun and douse flames, while the Heisei version simply hyper-evolved itself to gain protective lenses over its eyes.

Interestingly, the Space Gyaos in Gamera vs. Guiron seems to have no such aversion to sunlight: logical, given that it would be impossible for a space creature to avoid sun and star light. The Showa version also has a regenerative ability, as it was able to regrow its severed foot after only an hour. The Heisei version showed several evolutions: it was asexual and could reproduce on its own. While not shown to be regenerative, the Super Gyaos is immensely physically tough, able to easily shrug off missile attacks, and even survive orbital re-entry.

In the Showa series, the source of Gyaos' sonic beam is through the use of a special forked-shaped throat. However, the downside was that it left Gyaos unable to turn its head sideways, only upwards and downwards. In the Heisei series, Gyaos was able to turn its head normally. Another ability Gyaos had in its original appearance was that, when it was hungry or angry, it would emit a glowing green light similar to some species of fish. This ability was not seen in any of the later movies.


Main article: Gyaos/Gallery.



  • The production team of the Heisei Gamera trilogy decided on Gyaos as an opponent, as they believed that Gyaos was Gamera's most famous foe, having appeared in at least three of the Showa Gamera films. Originally, this role was set for Barugon (at least for one of the films) as shown within the manga adaption.
  • Eiichi named Gyaos after 'the sound he makes', though its roar hardly sounds like "gyaos".
  • Along with for the design of Gamera, aspects from ancient Chinese mythology were also used for Super Gyaos' design; designs of Chinese Dragons from the Spring and Autumn period and western Dragons.[2]
  • In several anatomical illustrations, Showa Gyaos was described to possess biological radars in ears and claws on wings, "psi liquid" in its brain to keep its stamina, and emit jets from its legs, and emit poisnous liquids from its claws, and poisonous powders from its chest, and its fog to stun foes.
  • Gyaos is the only enemy monster in the Gamera Series to appear in more than one film not counting stock footage.
    • Gyaos is considered to be the main antagonist of the Gamera Series and Gamera's archenemy.
  • Gyaos severing its own foot with its sonic beam seems to be a recurring theme, happening in Gamera vs. Gyaos, Gamera vs. Guiron, and Gamera: Guardian of the Universe.
  • Counting stock footage and photographs, Gyaos have appeared in every Gamera film since Gamera: Super Monster, and have also appeared in the NYCC trailer for the upcoming Gamera film.
  • Gyaos' roar was later altered for the The Return of Ultraman kaiju, Earthtron.
  • Gyaos possesses several stereotypically vampire-like qualities, most notably its taste for human blood and its weakness to sunlight.
  • Hajime Isayama stated that he was influenced by the Gyaos from Gamera: Guardian of the Universe when creating the man-eating Titans for his popular Attack on Titan manga series.[3] Ironically, Shinji Higuchi, who oversaw the special effects for Gamera: Guardian of the Universe, later directed a live-action film adaptation of Attack on Titan in 2015.
  • The M.U.T.O. from the Legendary Godzilla film have distinctively angular heads that bear a striking resemblance to that of Gyaos.


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