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Ultraman Blu
Ultraman Blu
Human Host/Form: Blu (Human form, destroyed)
Isami Minato (Human host, current)
Height: 51 m
Weight: 43,000 t
Age: Unknown
Home world: Unknown, possibly Planet Sanja (Rosso)
Planet O-50 (Ultra powers)
Voice actor(s): Ryosuke Koike
Suit actor(s): Akira Okabe
First Appearance: Ultraman R/B episode 1 "Beginning of Ultraman"
Last Appearance: Ultraman R/B The Movie: Select! The Crystal of Bond
Number of Appearances: 25 (Series)
1 (Movie)
Race: Ultra
Status: Alive
Family: Ultraman Rosso (Elder Brother)
Ultrawoman Grigio, Saki Mitsurugi (Younger Sister)
Ultraman Ruebe (Fusion with Rosso)
Ultraman Groob (Fusion with Rosso and Grigio)
Affiliation: Ultraman Geed/Riku Asakura

Ultraman Blu (ウルトラマンブル Urutoraman Buru) is one of the two main heroes of Ultraman R/B, and is the younger brother of Ultraman Rosso and older brother of Ultrawoman Grigio.


His name means "Blue" in Italian, which refers to his main form's body color being blue.


Pre-Ultraman R/B

"You must... live..."

―Rosso's and Blu's last words to Saki

Three warriors fighting Reugosite

In the past, three warriors from Planet O-50 were sent to defeat Reugosite, a planet-eating monster that destroyed everything in its path. The three warriors lost to Reugosite, and they crashed landed on Earth, the planet they were trying to protect. The two giants of light disappeared and left behind their sister, Grigio.


Rosso, Blu and Grigio Bone

1300 years ago, a meteor crashed down in what became Ayaka City, creating a massive crater and unleashing Grigio Bone. According to legend, the Ultraman siblings, Rosso and Blu fought it but ultimately lost, scattering the R/B Crystals and leaving their power laying dormant in the lands of Ayaka City.Beginning of Ultraman As revealed by Saki, the legend was false and Grigio was the third warrior who helped them fend off Reugosite long ago.Good People and Bad People

Ultraman R/B

The Beginning of Ultraman and Orb Dark's Attack


Rosso and Blu vs Orb Dark

In the present day, Rosso and Blu return to protect Ayaka City from monster attacks and bonded with Minato brothers - Katsumi and Isami after rescuing them from Grigio Bone's assault. Although already having Taro and Ginga Crystals, others were added to their arsenal for Type Change and attack enhancements. The instigator of monster attacks, Makoto Aizen, made himself known and fought them by exploiting a R/B Crystal's power to become Ultraman Orb Dark. After training in the mountains and obtaining the Victory Crystal, the brothers avenge their initial defeat with Rosso's new form, Ground, while Blu delivers the finishing blow.The World is Waiting for MeIn the Name of Ultraman

Battle Against Horoboros


Rosso and Blu vs Horoboros

Their next great challenge came in the form of Horoboros, who was able to deflect every finisher fired at it, despite now having the power of the Orb Ring NEO. Despite their efforts, Rosso and Blu were outmatched by the monster. Defeated, the Orb Ring NEO was taken from the brothers by Makoto Aizen, who transformed into Orb Dark once again. After Orb Dark's seeming victory against the monster, and Makoto's unleashing of Bezelb, the brothers transform again and destroy the Bezelb and prepared to fight Orb Dark, but were interrupted by the return of Horoboros, who was then evolved into its Bipedal form by Saki Mitsurugi. Horoboros managed to defeat all three Ultras before returning to its R/B Crystal. The next day, Horoboros returned and the brothers faced yet another tough battle, with all their tactics failing. They were on the losing end until Asahi arrived. She cheered them on and, hearing her prayers, the Orb Ring NEO returned itself back to the two Ultraman brothers, who used the Triple Origium Ray to finally defeat Horoboros.The Minato Family HolidayAizen's FrenzyWhat We Should Protect

The Power of Brothers Become One


Ruebe vs Grigio King

After that, they were faced by a vengeful Cereza, who transformed into Grigio King via Saki's Gyro. The brothers try their best but they are unable to defeat Grigio King, exhausting all of their techniques. As a final resort, they tried to use Ultraman's and Ultraman Belial's Crystals, but to only be rejected by them.The brothers return the next day after a short recovery period, but even with a new strategy, they were unable to defeat Grigio King until Asahi reminded them of their mother's words - that when the two of them are together, they can do anything. With that, they managed to unlock the power of Ultraman's and Belial's Crystals, which allowed them to fuse into a more powerful being known as Ultraman Ruebe, who fought Grigio King and finally destroyed it.Who Are You?Enshrined by Extremity

Reugosite's Arrival


Rosso and Blu Vs Grigio Regina

Unable to convince Saki out of her plan, Katsumi and Isami transform into Rosso and Blu to stop her from going back to Aizen Tech, having transformed into Grigio Regina to do so. Not wanting to kill her, Rosso and Blu were careful not to hurt her too much, though Saki did not reciprocate their sentiments. Unable to do much individually, the brothers fused into Ultraman Ruebe. Surprisingly, even the Ruebe Vortex Buster was ineffective against Grigio Regina and he was defeated.The Crystal of Destruction

After regaining their Gyros from Ushio, the Minato brothers transformed into Rosso and Blu to defend Grigio Regina from being shot by Reugosite, countering the Genesis Requiem by firing their signature Ultra Beams, though they were overcome. As Reugosite prepared to fire at them once more, Grigio Regina stepped in the way and was instantly killed before them.I Am Happy Rosso and Blu charge at Reugosite and transform into Ruebe but they are soon overpowered and split.

Rosso and Blu fighting Reugosite

Seeing that they were about to be finished off, Mio locked the Gyros and canceled their transformation in the nick of time to dodge the Genesis Requiem. Rosso and Blu reappeared again after the brothers talk to their mother but they were once again beaten and almost finished off, but just as they were hit, they fused into Ruebe and changed the future that Mio saw, giving her faith in her sons and convinced her to stop her plan. Eventually, Ruebe won by destroying Reugosite using the Shin Vortex Buster.Home of Sunrise

Ultraman R/B The Movie: Select! The Crystal of Bond


Other Media

Ultraman Hit Song History New Generation


Rosso and Blu meeting Zero.

In this music album, Rosso and Blu were recruited by Ultraman Zero to fight against Etelgar and free the New Generation Ultras from his captivity.Ultraman Hit Song History New Generation



  • Height: 51 m
  • Weight: 43,000 t
  • Weakness: Like all Ultras, Blu is subjected to the three-minutes limit. On occasion, he will revert back to human form even when the time is not up. It also appears that, like the Riser, the R/B Gyro has to cool down before Isami can transform again, however, it is not as long as the latter.

Body Features

  • Color Timer (カラータイマー Karā Taimā): Blu possesses a circle shaped color timer.
  • Ultra Armor: Blu has the standard silver Ultra Armor.
  • Protectors (プロテクター Purotekutā): Blu possess protectors on his chest that represents the element of the form he is in.


Isami takes a R/B Crystal from the R/B Crystal Holder and flips out the middle horn of the crystal. He then inserts the crystal and the R/B Gyro opens. The Gyro is placed at chest level and the handles are pulled twice. Isami then thrusts the Gyro forward and pulls the handles one last time and places the Gyro on his chest, before transforming utilizing the elemental power of the crystal. When swapping crystals with Katsumi, instead of getting the crystal from the holder, the new crystal will appear and fall from above. The same sequence continues afterwards.

"Enshrined by Water. The Azure Ocean!"

―Activation announcement for Aqua

"Enshrined by Fire. The Crimson Flame!"

―Activation announcement for Flame

"Enshrined by Wind. The Violet Cyclone!"

―Activation announcement for Wind

"Enshrined by Earth. The Amber Land!"

―Activation announcement for Ground



"Ultraman Blu: Aqua!"

―Transformation announcement

Ultraman Blu Aqua

Aqua (アクア Akua) is Blu's main balanced form that focuses on agility and continuous attacks. It uses the power of Ultraman Ginga's R/B Crystal, granting him the element of water. This form debuts in episode 1.

  • Maximum Flight Speed: Mach 7.1
  • Maximum Running Speed: Mach 1.8
  • Maximum Jumping Distance: 720 m
  • Underwater Traveling Speed: Mach 1.2
  • Underground Traveling Speed: Mach 0.7
  • Brute Strength: 80,000 t
  • Grip Strength: 44,000 t
  • Barrier: Blu puts up a rectangular energy barrier to defend himself from attacks.
  • Aqua Strium[1] (アクアストリューム Akua Sutoryūmu): Blu's finishing attack, an "L"-style beam of water energy.
  • Aqua Jet Blast (アクアジェットブラスト Akua Jetto Burasuto): Blu shoots a high-pressure water jet from either two of his fingers, or the palm of his hand. Its effects vary, as it can cut through objects, push his opponent away, or heal.
  • Ultra Beam: The original Ultraman Blu was able to fire an Ultra Beam from his arms in the "L" position.
  • Jumping Kick (ジャンピンキック Janpin Kikku): Blu jumps into the air and delivers a high-speed kick to the enemy.
  • Ultra Swing (ウルトラスィング Urutora Suingu): Blu picks up the opponent and swings it around before throwing them.
  • Energy Punch: A punch attack with an explosive discharge of blue energy on contact. Used against Mecha Gomora, only to hit Rosso as the monster disappeared.
  • Flame-Aqua Hybrid Shoot (フレイムアクア・ハイブリッドシュート Fureimu Akua Haiburiddo Shūto): A combination beam of Ultraman Blu's Aqua Strium and Ultraman Rosso's Flame Sphere Shoot, making a single devastating finisher ray.
  • Strong Blizzard (ストロングブリザード Sutorongu Burizādo): While using the Hurricane Bullet's vortex, Blu fires his Aqua Jet Blast, creating snow and cold wind.
  • W (Double) Kick (Wキック Daburu Kikku): A kick attack performed together with Rosso.
    • Twin Strike Kick (ツインストライクキック Tsuin Sutoraiku Kikku): A more powerful straight kick performed together with Blu.
    • Twin Drop Kick (ツインドロップキック Tsuin Doroppu Kikku): ROsso and Blu perform a drop kick together, resulting in an attack that is 5 times more powerful than them using their kick attack alone.
  • Twin Giant Swing (ツインジャイアントスウィング Tsuin Jaianto Suingu): Rosso and Blu grab onto a monster and swing it around together.
  • Twin Brain Buster (ツインブレーンバスター Tsuin Burēn Basutā): Grabbing onto an opponent, Rosso and Blu flip it over their backs, crushing them by the head.
  • Steam Explosion: After Blu uses the Aqua Jet Blast on the ground, Rosso Flame throws his Fire Bomb to the same location, causing an explosion of steam. Used to uncover the Tiga Crystal.


"Ultraman Blu: Flame!"

―Transformation announcement

Ultraman Blu Flame

Flame (フレイム Fureimu) is Blu's alternate form that focuses on endurance and powerful strikes. It uses the power of Ultraman Taro's R/B Crystal, granting him the element of fire. This form debuts in episode 1.

  • Maximum Flight Speed: Mach 5.4
  • Maximum Running Speed: Mach 0.85
  • Maximum Jumping Distance: 680 m
  • Underwater Traveling Speed: Mach 0.5
  • Underground Traveling Speed: Mach 0.7
  • Brute Strength: 78,000 t
  • Grip Strength: 44,000 t
  • Flame Equilix (フレイムエクリクス Fureimu Ekurikusu): Blu releases a beam of fiery energy from the palms of his hands. It is powerful enough to match Black King's Hell Magma. When used on Rosso Aqua's Splash Bomb, the bubble boils and then explodes, sending the target flying.
  • Flame Cluster: Blu can launch small blasts of fire energy in clusters.
  • Pyro Attack (パイロアタック Pairo Atakku): Blu releases flames from both of his palms.
    • Flame Burn (フレイムバーン Fureimu Bān): What seems to be an improved version from Pyro Attack, it fires streams of fire from his palms in a flamethrower attack.
  • Fire Tornado (ファイヤートルネード Faiyā Torunēdo): A synergy attack with the Pyro Attack and Rosso's Rosso Cyclone, creating a flaming cyclone.
  • Jomon Pottery Tactics (縄文土器作戦 Jōmon Doki Sakusen): When the rock layer created by Rosso Ground's Ground Coating gets superheated by Blu's Flame Burn, the stone hardens further.
  • W (Double) Kick (Wキック Daburu Kikku): A kick attack performed together with Rosso.
  • Ultra Swing (ウルトラスィング Urutora Suingu): Blu and Rosso grab onto a monster and swing it around together.
  • Twin Break Bomber (ツインブレイクボンバー Tsuin Bureiku Bonbā): Rosso and Blu fly towards their opponent and deliver a powerful double punch.
  • Deflection: Together with Rosso, Blu can deflect beams back at their source.


"Ultraman Blu: Wind!"

―Transformation announcement

Ultraman Blu Wind

Wind (ウインド Uindo) is Blu's speed form, which grants him amazing speed but uses up his energy faster. It uses the power of Ultraman Tiga's R/B Crystal, granting him the element of wind. This form debuts in episode 5.

  • Maximum Flight Speed: Mach 7.6
  • Maximum Running Speed: Mach 1.8
  • Maximum Jumping Distance: 710 m
  • Underwater Traveling Speed: Mach 1
  • Underground Traveling Speed: Mach 0.6
  • Brute Strength: 78,000 t
  • Grip Strength: 44,000 t
  • Increased Speed: In comparison to his main form Aqua, Blu can accelerate at a greater speed. He can also use this in conjunction with his R/B Slugger Blu to land rapid slashes.
    • Spiral Sonic (スパイラルソニック Supairaru Sonikku): Using this speed, Blu can encircle the opponent to create his own tornado. This can be used to counter another cyclone by spinning at opposite rotation or trapping his targets within it.
  • Wind Reflect Wall (ウインドリフレクトウォール Uindo Rifurekuto Uōru): Blu absorbs an incoming attack via a swirling barrier and can toss it away.
  • Storm Shooting (ストームシューティング Sutōmu Shūtingu): Blu generates a purple energy vortex, gathering its energy into his hands before firing a powerful, purple and white beam.
    • Storm Pressure (ストームプレッシャー Sutōmu Puresshā): A non-lethal variant, used to create a tornado from above or directed at the opponent. If used after Rosso's Ground Jet, it will trap the target's feet in rock, and together with Rosso Aqua's Splash Bomb, it creates a bubble of air used to free Pega from Gan Q and later defeat it and Bemstar.
  • Storm Force (ストームフォース Sutōmu Fōsu): Blu launches a powerful blast of wind from his hands, pushing back the opponent.
  • Gigaronic Laundry (ギガロニックランドリー Gigaronikku Randorī): While Blu runs around the opponent with the Spiral Sonic, Rosso throws down a Giant Sphere, trapping the target in a vortex of water and wind.
  • Aqua-Wind Hybrid Shoot (アクアウインド・ハイブリッドシュート Akua Uindo Haiburiddo Shūto): Rosso throws the Splash Bomb while Blu fires the Storm Shooting.


"Ultraman Blu: Ground!"

―Transformation announcement

Ultraman Blu Ground

Ground (グランド Gurando) is Blu's strength form, which grants him greater power and rigidity at the cost of speed and mobility. It uses the power of Ultraman Victory's R/B Crystal, granting him the element of earth. This form debuts in episode 10.

  • Maximum Flight Speed: Mach 6.7
  • Maximum Running Speed: Mach 1.5
  • Maximum Jumping Distance: 680 m
  • Underwater Traveling Speed: Mach 0.9
  • Underground Traveling Speed: Mach 0.6
  • Brute Strength: 85,000 t
  • Grip Strength: 47,000 t
  • Acceleration: At least for a brief moment, Blu can accelerate to high speeds, used in conjunction with his R/B Slugger Blu.
  • Rock Blaster (ロックブラスター Rokku Burasutā): After charging energy, Blu fires an orange bullet ray.
    • An alternate version fires out multiple smaller bullets, used against Reugosite.
  • Earth Bringer (アースブリンガー Āsu Buringā): Blu slams his fists into the ground, sending an energy current that erupts underneath the target.

Standard Abilities

  • R/B Slugger Blu (ルーブスラッガーブル Rūbu Suraggā Buru): Blu is able to summon a sword from his crest when fighting against his opponents.
    • R/B Slugger Attack (ルーブスラッガーアタック Rūbu Suraggā Atakku): A simple Slashing attack using the R/B Slugger.
    • Cross Slugger (クロススラッガー Kurosu Suraggā): Rosso and Blu simultaneously deliver an "X" shaped slash at the enemy, destroying them.
    • Deflection: By slashing at an incoming attack, the R/B Slugger can deflect it.
    • Slugger Connection (スラッガーコネクション Suraggā Konekushon): Blu fires an energy blade from his R/B Slugger, which connects with Rosso's R/B Slugger and fired back towards the enemy with a second blade added.
    • Energy Beam: Used in Ultraman Fusion Fight!, Blu can fire an energy beam from the tip of the R/B Slugger Blu.
    • Elemental Powers: The R/B Slugger Blu is able to channel the power of Blu's current elemental form into several abilities.
      • Sandstorm (サンドストーム Sando Sutōmu): Charging his weapon with energy, Blu Wind fires an energy wave that blows away dust and sand set up by Rosso Ground's Grind Rocks.
    • R/B Crystal Powers: Using R/B Crystals, Blu can perform finishing attacks with his R/B Slugger. Their appearance/color/element seems to change with Blu's own form.
      • Wide Shot Slugger (ワイドショットスラッガー Waido Shotto Suraggā): Using the power of the Seven Crystal, Blu fires an Eye Slugger-like energy projection that cuts the target.
      • Spark Attacker (スパークアタッカー Supāku Attakā): Using the power of the X Crystal, the R/B Slugger Blu is enveloped by thunder energy. Blu then jumps up and slashes at his opponent, electrocuting them.
      • Bringer Flash (ブリンガーフラッシュ Buringā Furasshu): Using the power of the Tiga Crystal, Blu forms an X made of purple energy before making one more energy arc which is sent flying to the opponent, making an energy drill.
      • Gravity Slasher (グラビティスラッシャー Gurabiti Surasshā): Using the power of the Victory Crystal, Blu forms a 'V' made of crystals. When he impales the weapon into the ground, it breaks apart and smaller projectiles are fired.
      • Dynamite Slash (ダイナマイトスラッシュ Dainamaito Surasshu): Using the power of the Taro Crystal, Blu launches a stream of flames at the opponent. Together with Rosso's Cross Spark Shoot, the combined heat and cold can crack armor such as Pedanium.
      • Galaxy Saber (ギャラクシーセイバー Gyarukushī Seibā): Using the power of the Ginga Crystal, Blu fires a water energy projectile shaped like Ginga's head crystal.
      • Spiral Slugger (スパイラルスラッガー Supairaru Suraggā): A special attack using the power of the Zero Crystal.

Orb Ring NEO-related Techniques

Through the use of Orb Ring NEO in its R/B Mode, Blu can perform finishers of Ultraman Orb by pressing its central button.

  • Origium Ray (オリジウム光線 Orijiumu Kōsen): Blu can use Orb Origin's Origium Ray.
    • Triple Origium Ray (トリプルオリジウム光線 Toripuru Orijiumu Kōsen): Rosso, Blu, and the "aura of Orb Origin" fire the Origium Ray.
  • Sperion Ray (スペリオン光線 Superion Kōsen): Blu can use Spacium Zeperion's Sperion Ray.
  • Zedcium Ray (ゼットシウム光線 Zettoshiumu Kōsen): Blu can use Thunder Breastar's Zedcium Ray.


  • Designer: Masayuki Goto.
  • The name of his signature Aqua Strium may have been derived from the signature finishers of the Ultras who celebrate their 45th and 20th anniversaries: Taro and Agul. Taro uses the Storium (ストリウム Sutoriumu) Ray (it is sometimes spelled Strium as well no matter how little sense it makes) and Agul uses the Agul Stream (ストリーム Sutorīmu), and Blu's Aqua Strium (ストリューム Sutoryūmu) may be an amalgamation of the two former beams' named. "Strium" means nothing on its own and may very well be "Stream" made to sound slightly more similar to "Storium" but without losing its overall essence.
  • When firing the Triple Origium Ray, Blu has his left hand vertical and the right horizontal, similar to Ultraman Zearth's Speshusshura Ray as opposed to the normal + style.
  • According to Makoto/Cereza's observations and analysis, Isami/Blu's stats are, as of episode 8:
    • Power: 1
    • Speed: 2
    • Defense: 1
    • Technique: 1
    • Stamina: 0
    • Finisher: 1
    • Looks: 2
    • Style: 1
    • Intelligence: 2
    • Mental: 0
    • Aura: 1
    • Mysterious: 1


Ultra Warriors
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