Home world: Planet Earth (Nebula M78 Universe)
First Appearance: Ultraman episode 10 "The Mysterious Dinosaur Base"
Latest Appearance: Redman
Height: 45 m
Weight: 20,000 t
Category: Kaiju
Affiliation: Professor Nikaido
Beryudora (Combination)
Jiras 39 roars

Jirass (ジラース Jirāsu), also dubbed under the name Akilla (アキラ Akira), and romanized as Jirahs in Redman, was a mutant frilled-lizard kaiju created by a mad scientist who aspired to create a legend-worthy beast. It was killed in a duel with Ultraman.


  • Frilled Monster (えりまき怪獣 Erimaki Kaijū)
  • Frilled Dinosaur (エリ巻恐竜 Erimaki Kyōryū)


  • Height: 45 m
  • Weight: 20,000 t
  • Origin: Loch Ness (Kitayama Lake)



A monster created by Professor Nikaido, Jirass was being raised in Lake Kitayama. It was inspired by the Loch Ness monster and other sea monsters. When reports of an abundance of fish suddenly disappearing in the lake came in, the SSSP was called in to investigate. When they didn't find any clues, the captain let them go on a vacation nearby at a nice hotel until they could be picked up. When Ide went fishing with a female reporter who had interviewed the scientist, they saw the scientist out on the lake about to feed Jirass. They then went to his house to investigate, but were beaten there by the scientist himself. When he found them in there, he took them hostage since they saw him earlier.

When the rest of the SSSP went looking Ide and the reporter. Jirass was released by the scientist to attack them. With the Scientist holding off the SSSP and revealing that Jirass was his creation, the scientist pulled off his mask to reveal his true self as an acquaintance of Captain Mura. During the scuffle between Jirass and the SSSP, the Scientist got trampled by Jirass, causing the monster to go out of control. Ide fixed his radio and told the rest of the SSSP that he was being held hostage in the scientist's house. Then right as the SSSP was about to get them out, Jirass came and attempted to destroy the house with them inside it.

Hayata pulled out the Beta Capsule and transformed into Ultraman. The battle was slow paced with Ultraman in control of the match, shoving Jirass back to test his superior strength to the monster. Once the monster was provoked, Ultraman tore off Jirass' frill and taunted it even more by imitating a matador bullfight with it. After wrestling with the angry monster, Ultraman punched Jirass as hard as he could with an Ultra Sword Haze in an attempt to knock the monster out. Jirass began bleeding profusely from the mouth and collapsed, dead. Instead of detonating the dead monster with his Specium Ray, Ultraman paused for a moment to replace the kaiju's torn-off frill, and stood for a while to pay his respects to his opponent before flying away to recover his energy.


  • Suit actor: Haruo Nakajima
  • Jirass's roar is a modified roar of the famous Toho monster Godzilla.
    • The Jirass suit itself, is actually a modified 1964 Godzilla suit, with the exception of the head, which is actually the head of the 1965 Godzilla suit. This arrangement is due to the rest of the 1964 suit been used for Gomess and the head was covered in hair and long spikes. Those were cut off and replaced with the '65 Goji head.
    • In the Latin American dub of the episode, Jirass is referred as Godzilla.
    • Indecently, Jirass is just Gojira's name without the "Go" katakana, a elongation kana after the "Ra" katakana and a "Su" katakana.
    • Jirass also has Godzilla's iconic power Atomic Breath, but Jirass' ray is called the Electric Heat Ray.
  • In the 1995 OVA of Ultraman, simply called Ultraman Graffiti: Wild! Ultra Country, Jirass is portrayed as a female and a past lover to Ultraman, much to the annoyance of his wife at the time.
  • Jirass is one of the monsters that makes up Beryudora's right arm in Mega Monster Battle: Ultra Galaxy Legends The Movie. Jirass' roar is also heard when Belial summons the monster army.
  • In the English dub of Ultraman, Jirass is described as having actually been made in Scotland, furthering its similarities with the Loch Ness Monster.
  • In the last episode of Ultraman, after Zetton defeats Ultraman, stock footage of Jirass can be seen along with Gabora.
  • Since Jirass is a mutated lizard as in the episode, this is another homage to Godzilla - yet a misconception, since Godzilla is commonly thought as a mutated lizard, when he's actually a mutated dinosaur.
  • Jirass would later inspire the Ultraman Dyna kaiju, Neosaurus
  • Jirass' suit actor is none other Haruo Nakajima, who also does Godzilla himself from the Toho Lineage.
  • Jirass' ghost appears in the Monster Graveyard in episode 21 of Ultraman Mebius.

Powers and​ Weapons

  • Adept Swimmer: Being based on the Loch Ness Monster and Godzilla, Jirass is a well-developed swimmer, living in a lake.
  • Electric Heat Ray: Jirass can fire a million-volt, light blue beam of electrical energy from his mouth, capable of starting fires and shattering rock. The strength of this beam on living opponents was never demonstrated, as Ultraman was able to dodge the beam whenever Jirass used it.

Other Media


Jirass redman

Redman vs Jirass

Jirass reappeared in episodes 13, 15, 16, 61, 70, 75, 100, 103, 106, and 110 of the series Redman. In this series, Jirass was one of the many monsters to battle with Redman.

Jirass first appeared in episode 13 where he fought Alien Baltan by pushing him down a hill. Redman intervened by throwing his Red Arrow near them. From there, the two decided to work together to take down the hero until Redman tricked them into ramming each other, killing them in the process.

Jirass reappeared in episode 15 where he charged at Redman and stopped at the edge where he barely fell off. Jirass then continued his fight with Redman again and eventually lost after the hero threw his Red Arrow at his chest and got killed in the progress.

In episode 16, Jirass was walking up a hill with his former enemy Alien Baltan until Redman appeared once more and fought them. Despite their improving teamwork, in the end, Jirass meet his end after a judo throw while the alien turned chicken and ran away.

Jirass reappeared in episode 61 where he fought Redman again right from the start, this all alone in a desert. After grappling with each other and rolling down a hill, they both fought each other and kept each other balanced with throws, grapples, and punches and kicks but Jirass was eventually defeated once again, this time with a Red Kick to the face from a hill.

In episode 70, while Eleking was dealing with Redman, Jirass took it upon himself to give the hero a hard time by teaming up with the electric kaiju after jumping from a cliff. Even though they did have the team advantage against the hero, he never gave up and held his own against them. Jirass eventually got killed by being repeatingly stabbed in the frill by the Red Arrow.

Jirass reappeared in episode 75 where teamed up Alien Icarus right from the start to fight Redman at a beach. They started out the fight by teleporting from the sand to the top of a cave, where they jumped off and onto the alien hero and gained the advantage against him from the start, but the hero never gave up and he held his own against both the monster and the alien, keeping the fight evenly matched. After Redman killed the alien with his Red Knife, he defeated Jirass by punching him multiple times in the face and then thrusting his weapon into the monster's mouth.

In the 100th episode of the show, Jirass appeared again and put up a much better fight than last time, being able to dodge Redman's Red Arrow and keeping up with his combat prowess, resulting in an evenly matched fight with him and Red Killer (who provided backup) against the alien hero. In the end, Jirass was defeated by a Red Kick to the face.

Jirass reappeared in episode 103 where he showed up to help Gudon when he was having difficulty against Redman. Even though they had him on the ropes when they came at him at the same time, Redman held his own against both monsters with his usual moveset of throws, grapples, punches, chops, and kicks. After he killed Gudon with his Red Knife, the alien hero turned his attention towards Jirass and defeated him with his Red Fall.

In episode 107, Jirass teamed up with not only Red Killer, but also Gudon and Peguila as well. When Redman encountered all four monsters after he came down from a hill, all four monsters crossed their arms, disappeared through smoke, reappeared in many angles of the alien hero, and then circled around him before fighting him. While the alien hero did his best to hold his own against the monsters, they proved to be more of a challenge for him. Eventually, Redman pulled through and defeated all four monsters with an explosion from throwing his Red Arrow to the ground.

Jirass reappeared in episode 109 where he assisted Shugaron in fighting Redman. Even though both monsters gave him a hard time in the fight, the alien hero didn't give up and held his own against both monsters with his usual moveset. Eventually, after he defeated Shugaron, Redman defeated Jirass by jumping up and then delivering a Red Chop to the face.

Jirass made her final appearance on the show in episode 110, where she assisted Gudon in fighting Redman one last time after they rolled down the hill together. The two monsters managed to give the alien hero a hard time in battle due to their teamwork, but nonetheless, Redman didn't lose hope and held his own against them with his usual moveset. Eventually, just like he did with Gudon, Redman killed Jirass by stabbing her in the chest with his Red Knife.


  • For this series, Jirass received a new suit, due to the previous suit being under the ownership of Toho again. This suit bears some marked differences from the original - Jirass's frill is smaller and bent upwards, and he is much thinner than in his first appearance. Interestingly, the suit bears a slight resemblance to Godzilla's appearance in Son of Godzilla.

Ultraman Graffiti: Wild! Ultra Country


A Jirass is seen in the first segment of the OVA on board the Train to the Vary Dimension to comute to work. A second Jirass, called Jirako is later revealed in the third act as a past love interest for Ultraman. As is the case with the OVA, Ultraman suffers bad luck through misunderstandings, and when seen hugging Jirako, his wife and children get mad. 

M78 Love and Peace

In the segment where Ultraman is flying around in a large bubble, he briefly passes an apartment where Jirass is living. He is cooking meat in a frying pan, and breathes fire on it to make it cook. Jirass later appears in the orchestra the Ultras put together to cheer up Seabozu, playing trumpet next to Gomora.


Of all the Ultra Kaiju in the Ultra Series, Jirass is among the most recognizable for his appearance.

Jirass is actually a redesigned Godzilla suit. Unlike Gomess, Jirass was created simply by combining the head of the DaisensoGoji suit (from the movie Invasion of Astro-Monster,) with the body of the MosuGoji suit (from Mothra vs. Godzilla) with some yellow paint sprayed on parts of his body and a yellow frill around the neck. To further demonstrate the similarities between Jirass and Godzilla, Jirass possesses a modified but still slightly recognizable Godzilla roar, as well as his Electric Ray attack bearing a very close resemblance to Godzilla's own atomic ray. Also adding to Jirass' close relationship with Godzilla, the portrayal of Jirass was done by suit actor Haruo Nakajima, who is famous for portraying Godzilla in the first twelve Godzilla films.

The reason behind Jirass' creation was because at the time of Ultraman's production, Tsuburaya actually intended for a different design for the monster for Ultraman to fight, but due to the minimal budget at the time (which is seen between episodes 8 through 19) and a very short schedule, Eiji Tsuburaya had negotiated with Toho Co. Ltd to have the Godzilla suit loaned to Tsuburaya Productions, which had been left in Toho's warehouse now that Toho, at the time was moving on to use a new suit for Son of Godzilla. The conditions for using the suit however was that it'd be in good condition once filming was complete.

It can also be said that Jirass' creation and appearance is to pay homage to the creation of Godzilla himself as Eiji Tsuburaya made his career famous in handling the special effects for Toho Co. Ltd, and for creating many of Godzilla's enemies and allies.

In popular culture

Sgt Frog/Keroro Gunso



In part 2 of episode 151 Sgt. Frog, when Fuyuki accidentally logged into the Real Adventure Game, a game where the player would face a monster in reality, he, Natsumi, Keroro and Giroro were forced to fend themselves against Capras (カブラス Kaburasu) a monster which was a homage to Jirass. According to Fuyuki, the monster resembles a giant Chupacabra with a frill on its neck, much like how the Jirass suit were simply the first Godzilla suit added with a frill on the neck. Also, when Capras fought an enlarged Giroro, he ripped off Capras' frill similar to Ultraman's fight against Jirass.

Figure Release Information





Ultraman Kaiju & Seijin
Bemular | Alien Baltan | Neronga | Ragon | Greenmons | Guesra | Antlar | Red King | Chandora | Magular | Suflan | Pigmon | Gabora | Jirass | Gango | Mummy Man | Dodongo | Pestar | Gamakujira | Gavadon | Alien Baltan II | Bullton | Alien Zarab | Aboras | Banila | Hydra | Kemular | Underground People | Telesdon | Jamila | Gubila | Gigass | Dorako | Red King II | Suflan II | Gomora | Dada | Goldon | Woo | Keronia | Zambolar | Alien Mefilas | Giant Member Fuji | Alien Baltan III | Kemur Man II | Alien Zarab II | Skydon | Seabozu | Zaragas | Re-Pigmon | Re-Dorako | Re-Telesdon | Geronimon | Kiyla | Saigo | Alien Zetton | Zetton
Redman Kaiju & Seijin
Redman Darkron | Black King | Arstron | Garamon | Alien Icarus | Dorako | Peguila | Jirass | Alien Baltan | Alien Goron | Gomora | Woo | Kanegon | Alien Mefilas | Sadola | Dangar | Ghostron | Gokinezula | Eleking | Telesdon | Nokogilin | King Maimai | Sartan | Bemstar | Beacon | Gronken | Zaurs | Kingstron | Stegon | Alien Mysteler | Zagoras | Kodaigon | Granadas | Plooma | Sasahiller | Alien Centaurus | Gudon | Red Killer | Draculas | Shugaron | Alien Bat | Zetton II
Unused Redman Kaiju & Seijin Big Liger | Graygas | Sufinga

Start a Discussion Discussions about Jirass

  • Jirass:a Godzilla faker

    4 messages
    • Also, did you know that the Kaiju Encyclopedia calls Jirass "familiar," probably as a reference to Goji?
    • Zombiejiger wrote:Also, did you know that the Kaiju Encyclopedia calls Jirass "familiar," probably as a reference to Goji? no i did ...
  • That's not Jirass, that is Godzilla!

    41 messages
    • Also, don't you think that Hedorah would be able to beat King of Mons, Bajiris and Scylla all at once?  I mean, he beat the origi...
    • Lamango wrote:Zombiejiger wrote:King of Mons vs. Godzilla 2004? Godzilla 2004 killed around 14 monsters!Let's compare th...
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