Ultraman Orb
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"Look, the Earth is round. I'm sure we will run into each other again eventually. See ya."

―Gai Kurenai, The Sunset Wanderer

"The faith to believe in myself...It becomes power. This is who I really am!"

―Gai unlocking Orb Origin, The Holy Sword, Restored

Gai Kurenai
Gai Kurenai
Ultra: Ultraman Orb
Age: Ageless
Gender: Male
Transformation Item Orb Ring
Home world: Planet O-50 [1]
First Appearance: Ultraman Orb Episode 1: The Sunset Wanderer
Last Appearances Ultraman Geed The Movie: Connect Them! The Wishes!!
Type: Hero
Family None
Affiliation Jugglus Juggler (comrade and rival)
Shin Asuka
Musashi Haruno
Gamu Takayama
Hiroya Fujimiya
SSP (unofficial member)
Daichi Ozora
Portrayed by Hideo Ishiguro

Gai Kurenai (クレナイ・ガイ Kurenai Gai?) is the human alter-ego of Ultraman Orb after he arrived on Earth. Gai has wandered around the Earth for a long time on a mission to stop Jugglus Juggler from resurrecting the King Demon Beasts. He uses the Orb Ring to transform by combining and using the powers of previous Ultramen. He also uses the Orbcalibur to transform to his original Ultra Form.


  • Kurenai (クレナイ?紅): Is the Kunyomi for crimson/vermilion.
  • Gai (ガイ?涯): Is the Kan'on for Shore/Horizon

Following these translations, his name literally means vermilion horizon, a possible reference to his disguise as a wanderer.


When in contact with other beings, Gai always maintains a good tone and is shown to be forward looking. He always introduces himself to them by telling them his name during his first contact with them. He is also kind-hearted as he always saves other people from danger and helps them when needed.

Gai's one weakness is that he can't leave someone to suffer on their own. When he thought Natasha Romanová was dead, he felt such extreme guilt that he sealed away Orb Origin. However, he managed to overcome this weakness thanks to Naomi Yumeno, and he regained his confidence in Orb Origin ever since.



Not much is known about Gai's past, but he was known to have climbed to the Warrior's Peak on Planet O-50 with Jugglus Juggler. They both reached out to the ring of light, but Juggler was rejected and Gai was granted the Orbcalibur, which changed him into Ultraman Orb as Origin The First whenever he would need to. He and Juggler used the Orbcalibur to get off Planet O-50 and travel to Planet Rurin, where Gai encountered a child whose parents had been victims of a Bezelb's Kugutsu and later died. He transformed into Orb for the first time, though smaller than regular Ultras, to do battle with the undersized Bezelb, but couldn't yet fight properly as Orb and was unable to use his beam correctly and thus lost quickly when the Bezelb fought back. Gai and Juggler stayed on the planet for a while to comfort the child and after scouting around, he found a few people, but the Bezelb returned. This time, Gai took Juggler's advice. He killed the Bezelb by sliding under it and firing the Origium Ray.

Later, he came across a Bemstar infected with the Kugutsu. This would mark the first time he ever transformed into his standard 50m size. After getting his Origium Ray absorbed into the monster's gorge, Orb was attacked by the monster and lost his second battle, and Gai was defeated. The two warriors left the planet.

When Gai and Juggler were flying through space via the Orbcalibur, they encountered the Bemstar again, but this time it was attempting to suck in a spaceship piloted by Micott and Ricca. He transforms into Orb again and after nearly being defeated again, he had the idea of letting himself be absorbed, only to burst through Bemstar, killing it.

He and Juggler joined the two and headed toward Planet Zain in order to stop Dr. Psychi, while waiting to get to his destination, he and Juggler had their first swordfight in the ship, where Juggler easily defeated Gai with his Snake Hearted Way. After a short rest, they ran into more Bezelb just outside Planet Zain, which caused Gai to transform and crush them all simply by flying through. When he landed on the dark planet, he was overwhelmed by a few larger Bezelb and a Kugutsu Birdon. Just when he was about to lose, Ultraman Dyna appeared and helped him out and they managed to hold off their foes.

After the battle, Gai met with Ultraman Dyna's human host, Shin Asuka, who agreed to help him go to the big tower where Psychi was. At the tower, he saved Micca and Ricoott as well as Juggler who, got possessed by Kugutsu via Shinra's seed of the Tree of Life. Gai and the rest left the planet while going to Planet Kanon at a slower rate due to Psychi's sabotage. TBA

Chapter 2 "I am the Migration Bird of Galaxy" arc

Gai was given the second mission to obtain the four elements of the Orbcalibur across the galaxy, he gained the personality of not having relations with others while still protecting the weak when they needed help. At a jewel planet, Gai meet Shorty whom tried to steal from him but decided to spare her in exchange that she follows him in his journeys, Gai gained a new ally. Gai then met Mulnau who explained to Gai the beauty of jewels, Gai chased after Mulnau but Mulnau escaped.

Collecting the jewel for the earth element, Gai and Shorty continued their journey to Planet Nuke, a planet mostly made up of water, where they encountered the daughter of tribal King Salmny whose tribe was having a conflict with another party. When Salmny awakened three monsters from the seabed, Gai became Orb and defeated them. Salmny was injured as Gai visited her while Shorty gave Gai the jewel for the water element from Gamukukira remains. Both left and traveled to a volcanic planet.

There, he meets Sadeath for the first time, Sadeath was the bodyguard of Orlock and fought with Gai, pushing him to a tough spot near the mouth of a volcano. But Gai saw an opening and escaped while Sadeath fell into the volcano. This did not stop the volcanic eruption as Gora awakes, Gai transformed into Orb and defeated it with Orb Water Calibur which he obtained earlier on. Gai then obtained the fire jewel for Orb Fire Calibur from the planet's people.

At last, Gai and Shorty visit the next planet to obtain the jewel for wind element, Gai meets someone whom also lives on Planet O-50 like him, the one who teaches him to blow the melody of his harmonica. Gai then reunites with Juggler, whom was the bodyguard of Alien Nackle Ramon Brothers. Before they fight, Juggler claimed the wind element jewel from the alien he killed. Gai and Juggler fought just as Gai about to deliver the finishing blow, Gai cannot bring himself to do that. Juggler was captured as Gai claimed the jewel for his Orb Wind Calibur that Juggler left and left the planet.

Chapter 3 "The Man who steals the Black Hole" arc

Gai and Shorty went to Planet 484 when Juggler and Bilanqi was captured, Gai was surrounded by several aliens and Gango as Gai fought hard but Juggler activated the Ballonga Bomb. However, Shorty sacrified herself to difuse the bomb while getting critically injured, Shorty then died in Gai's hands while Juggler was captured again as well as Bilanqi. Gai then returns to Planet O-50 and obtained the Orb Ring, given his next mission to stop King Demon Beasts and the revival of Maga-Orochi, Juggler also obtained the Dark Ring and chased Gai to Earth.

Chapter 4 "Fight! Ishtal Civlisation!"

In 1800 BC, Gai was in Ishtal with a new friend, Dana, whom was taking care of Gai as well. Gai also heard about Hortiop, the leader of the religion Magashizm. Decided to dress up as a member of that religion to investigate but Dodongo appears as Gai became Orb and defeated it. Soon later, Maga-Tanothor was freed as Gai transformed into Orb and defeated it after a tough battle, obtained Ultraman Tiga's card after the battle. Gai then left Ishtal years later after meeting Dana, whom was dying.

Chapter 5 " From Rulsaka of Love " arc

In 1908, Gai arrived in Rulsaka and then fought Kingsaurus II in Lake Baikal as Orb. Gai lost his memories after his fight with C.O.V., reverting back to Gai. When he was resting on a tree, he met a woman named Natasha in Rusalka, whom he came to care for deeply, but Gai does not remember what happened to him before that. But, during the rampage of Pris-Ma, after Gai defeated it, he regains his memories. Gai was still recovering from his injuries, the King Demon-beast, Maga-Zetton appeared, Gai transformed and fought the kaiju. Due to Maga-Zetton unleashing a Maga Light Ball and injuring Natasha, Gai unleashed the full power of his Orbcalibur, but the resulting explosion seemingly robbed Natasha of her life and she was nowhere to be found. In his grief, he sealed away his true form, and thus had to rely on the power of other Ultra Heroes through Fusion Up to fight evil.[2] Gai later journeyed to North Arctic and fought Peguila, later he when to Japan on board a train there while Juggler awakened Maga-Bassar.

Ultraman Orb

Gai chilling

Gai outside the SSP HQ

In modern times, Gai saved Naomi and her friends from Maga-Basser and fought as Spacium Zeperion and defeated Maga-Basser. In all the confusion Gai lost his Orbnica, but Naomi found and returned it to him. He thanked Naomi for returning back his Orbnica and continued on his way, stating to the SSP that he was sure they would meet again someday.

During these times, he transforms into Orb to fight against the King Demon Beasts and had also fought directly with Jugglus Juggler, showing the rivalry between both men. He also battled monsters sent by the Planet Invasion Union and other wild Kaiju.

After defeating Maga-Pandon, Gai thought that he had stopped Juggler from resurrecting Maga-Orochi. However during a confrontation against Juggler, Gai's rival revealed his plan of resurrecting Maga-Orochi by collecting their Kajiu Cards instead of using their physical forms. Juggler then taunted Gai for not showing his true power. Gai then witnessed the "death" of Juggler and defeated Black King.

During a fake date with Naomi and her mother, Juggler was revealed to be still alive, and took Gai aside to further explain his plan ro revive Maga-Orochi, but was interrupted by Naomi's mother. Juggler still managed to show Gai the Kaiju cards of the King Demon Beasts he defeated, and revealed that Belial's Ultra Fusion card was now in his possession. Princess Tamayura's spirit then appeared as a giant astral projection, to tell Gai a calamity was approaching, before disappearing.

The next day, Gai went to the forbidden forest to confront Juggler, but the demon was able to revive Maga Orochi. Gai transformed into Orb in all his forms at the time, but was defeated by Maga-Orochi. Juggler later confiscated the Ultra Fusion card holder from Gai.

Thanks to SSP, Tamayura's grave was restored and her spirit emerged from a plant to give Gai Zoffy and Ultraman Belial's Ultra Fusion Cards, telling him that the darkness and light combined would give him great power. With the new Fusion Up, Thunder Breaster, Ultraman Orb managed to brutally finish off Maga-Orochi.

With Maga-Orochi defeated, his mission was finished, or so he thought. Gai once again had to transform into Ultraman Orb when the Civil Judge Mentor from another dimension Galactron appeared, who abducted Naomi and made her a host. Ultraman Orb once again had to use Thunder Breaster when Spacium Zeperion and Hurricane Slash did not work on the robot, but he had to pay a heavy price when Naomi had to be hospitalised because of the Zedcium Ray destroying Galactron while she was still inside it. Gai couldn't forgive himself and wondered if he had the strength to be able to control Belial's power of darkness.

Gai returned to Rusalka after 108 years and remembered his last moments with Natasha, where he was interrupted when Juggler showed up once again and the two had another fight. Juggler then revealed that he was keeping the severed tail of Maga-Orochi and used it in a fusion of Zetton and Pandon to form the mighty Zeppandon, which Orb could not keep up with. After using up his energy, he lay down under a tree where he had a dream about Natasha, who gave him a blank Ultra Fusion Card and suddenly changed into Naomi, telling him that she believes in him. When Gai reawakened, the blank card was in his hand and he went back to Naomi in the hospital, only to show up just in time to save her from Juggler's katana and leave.

After rescued by Gai, Naomi recounted to Gai despite Orb caused her to be critically injured, she believed Orb was doing the right thing. Also recounting to Gai about her great great-grandmother and sank the song that Gai usually plays, causing Gai to open the pendant and reveal his picture with Natasha. Gai was saddened by the truth as Natasha survived the explosion and proceeds to hug and thank Naomi. Gai then entrusted his Orbnica and tasked Naomi to save Orb and then transformed into his Thunder Breaster to fight Zeppandon the second time.Even after being targetted by the VTL and blasted by Zeppandon, Gai/Orb shielded the SSP and restores his reputation. After Naomi sank the song which Gai tasked her to do before, Gai summoned his courage and transformed back to his Original form, trusting the extent of his powers. Gai/Orb introduced himself and finished Zeppandon with Orb Supreme Calibur after a short assault. After the battle, he reunites with Naomi and assured Natasha that he will save the Earth.

After regaining back his original powers, Gai still uses his fusion up forms against foes and changes to Orb Origin when the situation calls for it.

Soon after, Juggler and Gai decide settle their score in their gigantic form. When Gai uses Thunder Breaster, Juggler beats him and taunts him. Gai then uses his Orb Origin Form, however, when Juggler slashes off his Orb Flame Calibur attack, Juggler continuously uses his new technique on Orb, knocking Gai unconscious. When Juggler was about to kill the SSP ,Gai stands up and beats Juggler with his full strength and finished him with the Orb Supreme Calibur after that. Gai then meets Naomi and the others after the fight.

When Naomi wakes up in the SSP office and tells Gai about the dream she had, Gai assures her that due to the hot weather, it is normal to have such dreams. Gai later meets Juggler and noted that the revival of Magata no Orochi is coming. Thus, when Magata no Orochi appears, Gai transforms into his Thunder Breaster form to try and end Magata no Orochi but to no avail. Even his Orb Origin form was useless against it. Gai then reappears in a destroyed building area, weakened, Naomi spotted him and tries to help him but Juggler appears to taunt Gai and slaying Naomi in front of his eyes.

"Darkness isn't eternal. The only thing that's truly eternal is love. It's love that keeps the universe turning. It's a light of hope that shines in the depth of that darkness."

―Gai Kurenai, The Wandering Sun

In the final episodes, Gai then confronted Juggler whom held Naomi as hostage. Gai and Juggler then have a talk about the Earth's future whom Gai states that eternal love will continue to exist as Juggler taunts him about it. When Naomi motivated Juggler to slay her, a Z-VTOL plane crashed as Gai tries to rescue her. Naomi was resuced by Juggler instead and Gai tells Juggler that there is still light in him and asked whether he is the one who rescued Natasha as Juggler reveals the truth. Gai then slaps Juggler and embrace him by hugging him. After that, he went off to fight Magata no Orochi. When Gai (as Orb) was about to be defeated by Magata no Orochi, Juggler appears and assisted Orb. When its weak point was revealed, the two tried their best to kill it, but when Juggler got binded by Magata no Orochi's tentacles, he told Gai, or rather Ultraman Orb, to attack and Magata no Orochi was finished off with the Ultimate Supreme Calibur. He then leaves Naomi and the SSP, swearing they will meet again.

Ultraman Orb The Movie: Lend Me The Power of Bonds!

Few months later, Gai returned from Hawaii after defeating Galactron with the aid of Ultraman Zero to Japan by saving the SSP from the Dark Alien Army and found out about Ultraman X's X Devizer and set up his new journey. Gai then met X's human host, Daichi.

Ultra Fight Orb

Gai appeared as Orb in this series where Orb is first seen fighting Demaaga with his Origin Form. Gai later assumed his Lightning Attacker Form and finished off Demaaga. Gai then headed off to assist Zero in fighting Juda Spector and Mecha Gomora after getting a glimpse of his Emerium Slugger Form.

Chapter 10 "Reach for the sky, Migration Birds" arc


Powers and Weapons


  • Orbcalibur: Gai's weapon after he was chosen by the light. As Orb, Gai can use its elemental attacks by spinning the Calibur Wheel and use in conjunction with the Orb Ring for Orb Supreme Calibur.
    • Transformation: Before Gai obtained the Orb Ring, the Orbcalibur acted as a transformation device which allows Gai to become Origin The First.
    • Message Projection: The Orbcalibur can project messages, it glows white when it reveals a message.
    • Travel Sphere: The Orbcalibur can encase its user in a travel sphere and travels in space as a comet. The user can also travel with passengers as well.
    • Energy Slash: As Gai, the Orbcalibur can fire a rainbow colored energy slash, used to protect Queen Bezelb from the military.
  • Orb Ring: His transformation device.
    • Transformation: Being Orb's transformation device, Gai can use it to become his true form, Ultraman Orb.
    • Ultra Fusion Card Harvesting: After a King Demon Beast is defeated, it leaves behind its Maga Crystal. The Orb Ring can turn the Crystals into the Ultra Fusion Card of the Ultra who sealed away that King Demon Beast.
    • Ultra Fusion Card Scanning: After Orb lost his original form, Gai uses the Orb Ring to scan different Ultra Fusion Cards to use Fusion Up forms.
  • Orb Slasher: As Gai uses Trinity Fusion, Gai wields the Orb Slasher in order to use its attacks.


  • Physical Endurance: Gai can withstand things no normal human can such as being in a freezing environment for long periods of time, or falling thousands of feet in air.
  • Reflexes: Gai has excellent reflexes, he is quick enough to deflect energy bullets. When fighting Jugglus Juggler, Gai can reflect back Juggler's energy blasts with his own energy bolts.


  • Ultra Fusion Cards: Cards that allow Gai to use past Ultra Warrior's powers and allow Gai to summon the Orbcalibur.
    • Power Channel: Gai can channel the power of the Ultra Fusion Card outside of transformation. Seen when Gai uses Ultraman's card to block Alien Zetton Madock's rifle energy blast.
    • Ultra Hero Manifestation: When Ultra Fusion Cards are scanned in the Orb Ring, their respective Ultra Hero representation can manifest in real life. It is unknown whether they are sentient or not.
  • Ultra Fusion Card Holder: A casing used to contain the Ultra Fusion Cards.
  • Orbnica (オーブニカ Ōbunika?): Though not a weapon, this object is Gai's personal musical instrument, themed after the harmonica. The song he plays on it seems to bother evil beings.
  • Teleportation: Gai is capable of teleportation, much like his archenemy Jugglus Juggler. When he teleports,a blue light is usually seen, revealed in episode 17. In Ultra Fight Orb, he dissapears into glittering light.
  • Acceleration: He is capable of accelerating to high speeds, even for long distances.
  • Energy Bolts: Gai can fire yellow energy bolts from his hands.
  • Medical skills: Due to his experience as a former rescue team member, Gai knows at least basic medical first-aid skills such as CPR.


Gai first scans a pair of Ultra Fusion Cards in the Orb Ring, creating a projection of its two corresponding Ultra Warriors as the screen facing the respective angle of their faces. Afterwards, he performs a specific movement and raises the Orb Ring up which causes his body to transform into Ultraman Orb with his entire body being covered in a luminous silhouette. The Ultra projections shine the same color as their respective Ultra Fusion Card's attribute and combine with Orb to create their corresponding form. This caused his silhouette to evaporate and unveiled its corresponding form. After the rising sequence, Orb delivers a specific pre-battle catchphrase just before descending into the fight.

Despite the long transformation time, this was done in a time freezing sequence as in episode 5, Orb switches from Spacium Zeperion to Hurricane Slash in a moment in mid-air whereas Gai's sequence was supposedly longer than the intended time.A Heart That Won't Flee If at any point the transformation is interrupted from within, the time freezing effect is lost.The Dark King's Blessing

"Ultraman! Tiga! I'm borrowing the power of your lights!"

―Activation announcement for Spacium Zeperion

After scanning both cards, Gai simply raises the Orb Ring up similar to both Ultraman's Beta Capsule and Tiga's Spark Lens. During the rise sequence, the background first appears to resemble that of the opening sequence from Ultraman's TV series (a green twisted spiral followed by a red explosion) before changing to Tiga's rise sequence for Orb to appear. Flashes of light occur in the background similar to Ultraman and Tiga's rise scenes.

In the final episode, Gai while running transforms in a real time sequence as projections of Ultraman and Tiga fly alongside him before he transforms into Orb Origin and the former two combine with him to form Spacium Zeperion.The Sunset Wanderer

"Taro! Mebius! Help me bring the heat!"

―Activation announcement for Burnmite

After scanning both cards, Gai spreads his arm backwards similar to Taro's transformation sequence and twists his body backwards similar to Mebius' transformation sequence before raising the Orb Ring up. During the rise sequence, the background first appears to resemble that of the opening sequence from Ultraman Taro's TV series (plain black with a flash of light) before changing to Mebius' rise background for Orb to appear. As he moves forward, silver loops from Taro's rise also appear.

"Jack! Zero! Give me something with an edge!"

―Activation announcement for Hurricane Slash

After scanning both cards, Gai raises his right hand similar to Jack's transformation sequence before he lowers it for his left arm to approach closer to his face similar to Zero's Ultra Zero Eye and then raises the Orb Ring up. During the rise sequence, the background first appears as Jack's rise sequence before changing to Zero's rise sequence for Orb to appear. As he moves closer, a background similar to Shining Zero's rise takes place.

"Zoffy! (Gai roars in rage)"

―Initial activation announcement for Thunder Breaster

In his first transformation, Gai is incapable of utilizing Belial's power but once given approval, Belial introduced himself by having a tear opening up to reveal his front face, laughing towards the screen. After scanning both cards, Gai roars in rage while vigorously flailing his arms forward similar to Kaiser Belial's usage of the Kaiser Belial Claws before he raises the Orb Ring.

"Belial! Zoffy! I'm borrowing the power of darkness and light!"

―First standard activation announcement for Thunder Breaster

"Zoffy! Belial! I'm borrowing the power of light and darkness!"

―Second standard activation announcement for Thunder Breaster

After scanning both cards, Gai slowly swings his left and right arm before twisting his body backwards and then raising the Orb Ring.

During the rise sequence, the background first appears as the Space Prison covered in a reddish-like aura (the same from Alien Reiblood's assimilation with Belial) before changing to blue (based on the opening sequence from Zoffy's feature movie) for Orb to appear where it changes once again to dark red (based on Belial's aura when forming Beryudora). As he moves closer, the background briefly changes to an orange background similar to Zoffy's rising scene in the final episode of Ultraman Mebius before changing to emerald with multiple colors based on the colors of Arch Belial.

"Ginga! X! Give me the power to electrify my enemies!"

―Activation announcement for Lighting Attacker

When scanning both cards, Ginga and X faces towards the screen besides Gai as their upper chest are also shown. After scanning both cards, Gai swings his arms in a circular fashion similar to Ginga's transformation sequence and throws his arms back to his left similar to X's transformation sequence and then raises the Orb Ring up. His silhouette does not evaporates and the scene skips to his rise. During the rise sequence, Orb rises with his arms crossed in front of his chest like X does, rising in a galaxy similar to Ginga's rise before changing to cyberspace and releasing an "X" construct while having a spiral galaxy behind it. He changes his arm positions as the background changes yet again to resemble X's, while yellow lightning bolts come off him throughout the rise scene.

"Ginga! X! Lend me the possibility of the future!"

―Alternate activation announcement for Lightning Attacker

Ultraman X bestows Orb his own Ultra Fusion Card and then gets Ultraman Ginga's Ultra Fusion Card from the audience. After scanning the cards, the transformation scene unveils Orb in Spacium Zeperion (instead of Gai himself or Orb Origin's silhouette), placing his arms on his chest in a cross position before lifting up his left hand. After that the scene changes to reminisce X's rise background where Lightning Attacker approaches the screen.

"Seven! Zero! Lend me the power of father and son!"

―Activation announcement for Emerium Slugger

Instead of only their heads, Seven and Zero's entire body (save their lower waist) are shown in a different angle. Gai performs Leo/Zero's Space Kempo stance before he puts his arm in a cross and brings them backwards in a similar manner to Seven's rise. Once he raises the Orb Ring, his silhouette as Orb combines with Seven and Zero as it evaporates and a pair of Crest Weapons circulate his body and attach themselves to his head. During his rising scene, a blank spatial background appears where Orb rises from Seven's transformation spark as it changes into the opening of his series background and finally changes into those of Zero's rising scene.

Gai scans the Orb Origin card to bring forth the Orbcalibur and spin its wheel. Then he raises the sword upwards and presses the trigger, causing all four element symbols on the sword to shine and create an energy orb from which Orb Origin rises.

Gai presses the trigger of the Orbcalibur and raises it towards the air. Origin The First soon appears from a red background and approaches the screen while the background changes colors and rings of light appear.

In the final episode of The Origin Saga, Gai shouted Orb's name before he transforms, doing so in synchronization with his seniors.

"Ginga! Victory! X! Allow me to borrow the lights of the three of you! Orb Trinity!"

―Orb Trinity's transformation catchphrase

Unlike the Fusion Up, his card components first circulate around Gai before he takes and scans them. After pressing the Orb Ring's trigger, the Orb Slasher materializes where he proceed to slide his finger downwards, before spinning his hands in circle and raises the weapon.

The summoned Ultra projections combine with Orb's silhouette but instead of evaporating, it absorbs nearby matter to unveil himself. Orb Trinity rises in a background of a galaxy and cyberspace, while crystal shards are dispersed in the background, before switching his arm position as he moves closer.

Ultra Fusion Cards

Gai obtains the Ultra Fusion Cards from fighting monsters as Ultraman Orb and uses them to help him in his cause.


  • Gai/Ultraman Orb's concept as a traveler is based on Dan Moroboshi/Ultraseven. This is acknowledged by Takao Nakano, one of the writers of Ultraman Orb.
  • Hideo Ishiguro's age at the time he portrayed Gai Kurenai is 27 years old. That is also the same age when Susumu Kurobe portrayed Shin Hayata in the original Ultraman.
  • His given name, and the fact that he is played by Hideo Ishiguro, is one kana away from Ishiguro's previous role as KaiIcon-crosswiki in Kamen Rider Den-OIcon-crosswiki.
  • Gai shares a few similarities with Tsukasa KadoyaIcon-crosswiki/Kamen Rider Decade.
    • Both are world travelers.
    • Both use cards to call upon the power of those who came before them.
    • Unlike Tsukasa, he is not an anti-hero.
  • Gai also shares a few similarities with Ken Hayakawa from Kaiketsu Zubat.
    • Both are wanderers.
    • Both lost someone important to them.
    • Both tend to play a musical instrument to announce their presence to their enemies.
  • Gai has a great love of hot spring bathing as shown in the episode Monstrous Waters, where he calls it 'Earth's greatest luxury'. He also takes issue with anyone with poor hot spring etiquette.
  • His name is simply written as 'Gai' in the opening sequence of Ultraman Orb THE ORIGIN SAGA.


  2. Excerpt from Televi-kun, "Orb Origin was the one who fought Maga-Zetton around 100 years ago. However, it was too strong and caused someone important to Orb to be injured. Orb decided to seal away Orb Origin.".
Human Hosts/Forms
Showa Heroes Shin Hayata | Dan Moroboshi | Hideki Goh | Seiji Hokuto | Yuko Minami | Kotaro Higashi | Gen Ohtori | Takeshi Yamato | Choichiro Hikari
Heisei Heroes Masaki Kazimori | Jack Shindo | Kenichi Kai | Genki Kagura | Katsuto Asahi | Daigo Madoka | Tsubasa Madoka | Amui | Ginga Yumeboshi | Shin Asuka | Gamu Takayama | Hiroya Fujimiya | Musashi Haruno | Julie | Kaito Touma | Mirai Hibino | Kazuya Serizawa | Ryuu Aihara | Shingo Sakomizu | Jin | Run | Shin Moroboshi | Nozomu Taiga | Hikaru Raido | Shou | Daichi Ozora | Gai Kurenai | Riku Asakura | Leito Igaguri
The Ultra Force Chuck Gavin | Beth O'Brian | Scott Masterson
Deunamists Shunichi Maki | Jun Himeya | Ren Senjyu | Nagi Saijyo | Kazuki Komon
Evil Ultra Hosts Keigo Masaki | Riko Saida | Shinya Mizorogi | Hiroyuki Misawa | Mitsuhiko Ishibori | Arie Ishikari
Other Hero Hosts Kyotaro Kagami | Goro Kirishima | Daisuke Misaki | Naoki Tachibana | Naoto Sho | Takeshi Todo | Sam Collins | Ai Kumasiro | Akira Kageyama | Nao | Tomoya Ichijouji | Daisuke Misaki (Stage)

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