Ultraman Groob (ウルトラマングルーブ Urutoraman Gurūbu)[1][2], or Ultraman Gruebe[3][4], is a Super Ultraman born from the fusion of Ultraman Rosso, Ultraman Blu, and Ultrawoman Grigio. He first appears in Ultraman R/B The Movie: Select! The Crystal of Bond.



Similar to how "R/B", which is pronounced "Ruebe" (ルーブ), is derived from the initials of Rosso and Blu, Groob (グルーブ) follows the same naming convention with Grigio ("G") added.


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

Groob and Geed Vs Tregear and Snake Darkness

When Ultraman Tregear appeared backing up Snake Darkness, everyone was easily overpowered. Refusing to give up, the Minato siblings - Katsumi, Isami, and Asahi fused into Groob, activating the Makoto Crystal’s power through their family ties. Groob was joined by Riku, who transformed into Ultraman Geed Ultimate Final once more. Groob and Geed then alternated between fighting Tregear and Snake Darkness, and were eventually fighting on par with them. Finally, Groob destroyed Snake Darkness via the Groobing Beam and freed Yukio Toi from the dark influence. Ultraman R/B The Movie: Select! The Crystal of Bond

Ultra Galaxy Fight: New Generation Heroes

Groob, with the New Generation Heroes in their strongest forms

Ultraman Tregear revives Ultra Dark-Killer and Ultraman Zero Darkness after their defeat at the hands of Ultraman Ruebe, with the former growing to giant size and going berserk due to his overflowing power. The Minato siblings join the New Generation Heroes to fight Ultra Dark-Killer by fusing into Ultraman Groob. After the New Generation Heroes assault Dark-Killer, Ultraman Taro arrives and advises them to lend their power to the Strium Brace. Upon doing so, Ginga performs the New Generation Dynamite and delivered the finishing blow towards Dark-Killer, destroying him and the Dark Palace. The siblings separate upon the villain's defeat. Ultra Galaxy Fight: New Generation Heroes

Ultraman Taiga The Movie: New Generation Climax

Once the other New Generation Heroes regain their powers, they face off against Tregear, the Grimdo-possessed Taro and Tregear's monsters, with Rosso and Blu fighting against Gorothunder. After their opponents receive power ups from Grimdo, Rosso and Blu fuse with Grigio into Ultraman Groob to finish off Gorothunder. Initially being trounced by Grimdo after it had absorbed Tregear, the New Generation Heroes fused with Taiga into Ultraman Reiga and defeat Grimdo. The New Generation Heroes give their parting words to the Tri-Squad and Hiroyuki and return to their home worlds. Ultraman Taiga The Movie: New Generation Climax


Ultraman Gruebe.png



  • Height: 53 m
  • Weight: 47,000 t
  • Maximum Flight Speed: Mach 10
  • Maximum Running Speed: Mach 6
  • Maximum Underwater Speed: Mach 5
  • Maximum Underground Speed: Mach 4
  • Maximum Jumping Height: 1500 m
  • Arm Strength: 135,000 t
  • Grip Strength: 99,000 t
  • Time Limit: 3 minutes

Body Features

  • Groob Signal (グルーブシグナル Gurūbu Shigunaru): Groob possesses a circular-shaped Color Timer.
  • Ultra Armor: The standard Ultra Armor, which is more durable than that of Ruebe, capable of taking in many attacks without any signs of damage.
  • Protectors (プロテクター Purotekutā): Like his components, Groob sports protectors covering his chest area.
  • Crystals: Groob possesses small crystals on his chest, arms, and legs.
    • Breast Shiner (ブレストシャイナー Buresuto Shainā): Specifically referring to the crystals on his chest, they are used to fire the Delta Breast Lancer.
  • Golden Ring: A golden Ring on Groob's back, it is where the R/B Kourin is stored.


"Overlap! The Three Souls!"

―Transformation announcement w/ Makoto Crystal.

"Enshrined by Reality! Immortal Truth!"

―Groob's transformation catchphrase

The Minato Siblings join their hands, which summons the Makoto Crystal. Katsumi then presses the side button, opening up the crystal while Isami and Asahi stand by his side, revealing its Kanji and inserts it to his Gyro. He then thrusts the Gyro forward and pulls the handles one last time and places the Gyro on his chest, before the siblings transform into Groob.


  • Groob Reflect (グルーブリフレクト Gurūbu Rifurekuto) (Unused): Groob summons a barrier of light.
  • Hand Blocking: Groob can simply block an energy beam with his bare hands.
  • Transportation Sphere: Groob can create an energy sphere to transport and protect other beings.
  • Strength: Groob is naturally stronger than Ruebe, being able to easily handle Snake Darkness in a hand-to-hand combat without difficulty.
  • Ultra Charge (ウルトラチャージ Urutora Chāji): Groob can charge up an ally by donating his light energy.


  • R/B Kourin (ルーブコウリン Rūbu Kōrin): Groob retains the use of Ruebe's personal weapon.
    • Groob Vortex Buster (グルーブボルテックバスター Gurūbu Borutekku Basutā): An upgraded version of Ruebe's Ruebe Vortex Buster, using the Makoto Crystal in place of the Kiwami Crystal. Groob fires a destructive beam from the R/B Kourin.
    • Groob Kourin Shot (グルーブコウリンショット Gurūbu Kōrin Shotto): An upgraded version of Ruebe's Ruebe Kourin Shot, using the Makoto Crystal in place of the Kiwami Crystal. Groob fires three cutting halos from the R/B Kourin.



  • Groobing Beam (グルービング光線 Gurūbingu Kōsen)/Gruebing Beam[4]: Groob's Ultra Beam. He fires it from the "+" position when he puts his left hand in a fist. The beam has the miraculous power to save the life of victims trapped inside a Kaiju.
  • Delta Breast Lancer (デルタブレストランサ Deruta Buresuto Ransa): Groob's secondary energy beam, fired from the crystals on his chest.
  • Energy Bullet: Groob can fire multicolored energy bullets from his hands.


  • Groob Kick (グルーブキック Gurūbu Kikku): A powerful kick attack with destructive force.
    • Groobing Impact (グルービングインパクト Gurubingu Inpakuto): Groob can imbue energy into his foot for a more powerful kick. Three times more powerful than Groob Kick.
  • Groob Punch (グルーブパンチ Gurūbu Panchi): A punching attack with strong impact.
    • Groobing Smash (グルービングスマッシュ Gurubingu Sumasshu): Groob can imbue energy into his fist for a more powerful punch. Three times more powerful than Groob Punch.
  • Groob Tackle (グルーブタックル Gurūbu Takkuru): An attack with Groob's entire body.
  • Groob Throw (グルーブスロウ Gurūbu Surō):Groob is strong enough to lift up Snake Darkness by the tail, and throws it afterward.
  • Groob Chop (グルーブチョップ Gurūbu Choppu): A chopping attack.


Ultraman R/B The Movie



  • All footage of Groob in Ultraman R/B The Movie portrays the character fully in CGI.
  • While the Makoto Crystal toy's box spells his signature Ultra Beam as Groobium Beam (グルービウム光線 Gurūbiumu Kōsen), the soft vinyl's card and magazines instead state that it is called Groobing Beam (グルービング光線 Gurūbingu Kōsen).
  • The way Rosso, Blu, and Grigio hold hands in a circle during Groob's transformation is likely a reference to Triple Fighter.
    • Groob's fusion parallels said hero, as both are fusions of three individual heroes who are siblings, two brothers, and a sister.


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