Ultraman Wiki

Giestron (ギーストロン Gīsutoron)[1][2] is a Kaiju that first appeared in Ultraman Festival 2019 before debuting on screen in Ultraman Taiga.

Subtitle: Ferocious Monster (凶猛怪獣 Kyōmō Kaijū)[1][2]


Galaxy Rescue Force Voice Drama

Giestron, alongside Kelbim and Neronga, was sighted by the Galaxy Rescue Force, Ultraman Ribut, Poccola, and RB are sent to fight them. Ribut quickly defeats them with the Remote Cutter. But somehow they were revived by a mind-controlled Sora who approaches the GRF members. Daada also appeared and explains his true motif, he also said Sora created a device in which the kaiju gain unlimited energies. Daada and Sora then leave, thus leaving the three kaiju fighting the three Galaxy Rescue Force members. As Poccola and RB convince Ribut to save Sora, they fight the monsters, with RB summoning his Nova and fighting alongside him. Later, Daada had no choice to bring his three monsters from the battle to assist after Ribut saved Sora. Not long after, all of the GRF members came to help Ribut and Sora. They fired their beams at Daada and his monsters, destroying them for good.

Ultraman Taiga

Giestron is the incarnation of the Earth's anger, emerging from the depths of the Earth to take revenge against humanity for polluting the planet. Giestron was sealed away by Takkong many years ago, but had returned due to Takkong's age taking a toll on its ability to seal Giestron away. Giestron emerged in the modern day from underground, destroying helicopters and buildings to take revenge on humans that have been polluting the Earth.

Takkong was still sleeping when Giestron appeared, being woken up by Shinji. The two monsters proceeded to fight each other, but Takkong was overwhelmed and beaten. Giestron then began to control the Earth's electromagnetic energy, trying to cause much of the planet's magma to seep to the surface and end the world. Taiga appeared and used his Hand Beam to interrupt the monster, engaging it in a fight. In his normal form, he barely did anything and got pushed away like Takkong. Giestron tried to attack him with an energy boomerang which was then blocked by Takkong. Taiga checked to see if the monster was okay before changing into Tri-Strium. The guardians of humanity then teamed up against the beast, both assaulting Giestron from different directions. Takkong spun around rapidly and surrounded itself in fire before ramming into the monster, dealing serious damage and allowing Taiga to come in with the Taiga Blast Attack, destroying Giestron and likely ending its threat for a long time to come. Taiga and Takkong then gave each other a high-five as celebration.

Before leaving, Shinji told Hiroyuki Kudo that Giestron may return someday if humans are not willing to change their ways. What's up with Takkong?


  • Designer: Daisuke Inomoto
  • Like Kamisori Demaaga and King Galactron before it, Giestron first appeared in the year's Ultraman Festival stage show before making its way into the TV series.
    • Interestingly, their mouths are often static due to the lack of a movement mechanism.
  • Due to the use of Return of Ultraman's BGM and appearing with Takkong in its debut episode, its implied that Giestron is either a variation of Arstron or simply a monster that shared its body build.
    • The Ultraman Taiga Super Complete Works magazine and Blu-ray Box II only stated that Giestron was designed under Arstron's inspiration. Additionally, its creation was also under demand by Takanori Tsujimoto.
  • Its rivalry with Takkong and representation of the Earth is based on the rivalry of Ultraman Gaia and Agul in their season.

Ultraman Z


When Haruki Natsukawa was still in his elementary school years, Giestron attacked for some reason. His father went off to help other people, but never came back and lost his life in the process, leaving Haruki's mother to raise the boy by herself. The incident haunts Haruki to this day. What Must Be Defended


Giestron Full.png

  • Height: 60 m
  • Weight: 25,000 t
  • Origin: Underground
Powers and Weapons
  • Burrowing: Despite its need to create a hole in the surface, Giestron at the very least capable of carrying itself out from the depths of the earth.
  • Body Spikes: Giestron has spikes all over its body, which it uses as weapons in combat. They are capable of manipulating electromagnetic energy for use in energy-based attacks.
    • Giestron Lightning Wave (ギーストロン雷電波 Gīsutoron Raiden-ha): Giestron fires a thin yet highly concentrated beam of energy from its cranial horn.
    • Giestron Giant Quake (ギーストロン大振波 Gīsutoron Dai Shin-pa): Giestron creates a storm by manipulating electromagnetic energy. It is able to cause the magma underneath the ground to emerge on the surface.
    • Giestron Super Lightning Wave (ギーストロン超雷電波 Gīsutoron Chō Raiden-ha): Giestron forms an energy cutter between its arm blades before flinging it towards a target.


Ultraman Taiga

Ultraman Z



Ultraman Taiga Kaiju
Ultraman Taiga Alien Rivers Kawazu | Homare Soya | Alien Ckalutch | Cicada Human | Alien Magma Maguma | Baby Zandrias | Zegun | Young Mother Zandrias | Alien Markind Markind | Hellberus | Baby Guesra Chibisuke | Lecuum | King Guesra Chibisuke | Galactron MK2 | Darebolic (MB) | Alien Fanton | Alien Zetton Zolin | Volk | Alien Serpent | Galmess | Hupnath | Alien Pedan | Chiburoid | Alien Seger Aoi | Segmeger | Alien Damara | Alien Gapiya Abel | Cicada Girl | Alien Perolynga | Alien Babarue | Alien Hook | Night Fang | Majappa | Maiko Namekata | Alien Keel | Hupnath | Alien Nackle Odyssa | Black King | Maria | Alien Zelan Oshoro | Pagos | Gymaira | Ilt | Gigadelos | Lunah | Alien Galo | Dethmon | Purana | Baby Samekujira | Lim Eleking | Baby Vadata | Alien Chibull Mabuze | Skull Gomora | Alien Semon Meed | Demaaga | Bemular | Alien Bat Seiji Komori | Alien Pitt Hitomi Mizuno | Zetton | Gorothunder | Alien Haze Mystie | Alien Bado El-Ray | Aribunta | Pandon | Alien Ghose | Takkong | Shinji | Giestron | Alien Godola | Alien Sran | Alien Zarab | Woola
Ultraman Taiga The Movie: New Generation Climax Grimdo | Dada | Alien Magma Maguma | Alien Markind Markind | Legionoid Dada Customize | Alien Keel | Alien Serpent | Lecuum | Alien Fanton | Alien Zelan | Alien Ckalutch | Alien Bado | Alien Shaplay | Alien Groza | Hellberus | Segmeger | Night Fang | Gigadelos | Gorothunder
Tri-Squad VoiceDrama Kishiader | Gerg | Imbiza | Re-Brocken | Mecha Birdon | Dakumiran | Zabiden | Bazelia | Re-Zaragas | Re-Alien Iyros | Re-Beacon | Re-Muruchi | Pestria | Paraidar | Dairaoh | Ilia | Alien Godmes
Tregear's Story/Blue Shadow Gagoze | Snark | Murnau | Leugocyte | Greeza | Alien Pegassa Pega | Snake Darkness
Ultraman Z Kaiju
Ultraman Z Gomess | Sevenger | Genegarg | Bullton | Celebro | Neronga | Majappa | Bemstar | Segmeger | Windom | Guigass | Gomora | Telesdon | Erimaki-Telesdon | Peguila | Jugglus Juggler | Zeppandon | Gillvalis | Alien Pegassa Pega | Valis Raider | Skull Gomora | Thunder Killer | Pedanium Zetton | Alien Pitt | Tri-King | Five King | King Joe | Alien Barossa | Red King A & B | Giestron | Grigio Raiden | Kanegon | Greeza | Horoboros | Metsuboros | Alien Barossa II | Pagos | Kemur | Baraba | M1 | Kelbim | Mother Kelbim | Alien Barossa III | Ultroid Zero | Takkong | King Guesra | Demaaga | Gomess (S) | Destrudos
Fight! Sevenger Sevenger | Jugglus Juggler | Crazygon | Diplas | Jirangon | Majaba | Red Smogy | Samekujira | Idatenran | Vortex Fire | SC-2 Prototype Machine | Gakuma | Ashuran
Sevenger Fight Sevenger | Jugglus Juggler | Jirahs | Alt-Helzzking | Eleking | Dancan | Pigmon | Garamon | Gazort | Reconstructed Pandon | Alien Icarus | Gandar | Alien Ghose | Beam Missile King | Pestar | Satan Beetle | Alien Boze | Alien Akumania | Alien Kettle | Oni-on
Ultra Galaxy Fight Kaiju
Ultra Galaxy Fight: New Generation Heroes Ultra Dark-Killer | Dark Lugiel | Etelgar | Peguila | Ragon | Red King I and II
Ultra Galaxy Fight: The Absolute Conspiracy Absolute Tartarus

Chapter 1

Hellberus | Alien Sran | Leugocyte | Reibatos | Gymaira | Gudis Maga-Orochi | Gukulushisa

Chapter 2

Alien Nackle | Alien Babarue | Alien Godola | Dada | Alien Empera | Juda Spectre | Mold Spectre | Reibatos | Alien Bat | Zett | Night Fang

Chapter 3

Reibatos | Alien Bat | Zett | Zetton | EX Zetton | Hyper Zetton | Zetton Falx | Zandrias | Noiseler
Galaxy Rescue Force Voice Drama Gukulushisa | Queen Izana | Kenis | Bemstar | Alien Valky | Baby Samekujira Samekichi | Poccola | Dinozaur | Nova | Alien Babarue (RB) | Red King | Daada | Kelbim | Giestron | Neronga
Ultra Galaxy Fight: The Destined Crossroad Absolute Tartarus | Absolute Diavolo | Absolute Titan | Absolutians | Lidorias | Alien Bat | Reibatos | Gina Spectre | Bemstar | Darklops | Legionoids | Pestar | Gua Spectre | Mecha Baltan | Cyber Mecha Baltan