Ultraman Wiki

The GDF (Global Defense Force (地球防衛隊, Chikyū Bōei-tai) is a cross-national defense organization formed by the world governments to combat kaiju and alien threats. The main branch seen in Ultraman Arc is GDFJ (Global Defense Force Japan) (地球防衛隊日本支部, Chikyū Bōei-tai Nihon Shibu).

Overview

Since the event known as "K-DAY," simultaneous kaiju appearances globally have made kaiju disasters commonplace in Japan. As a result, the organization known as GDF was established worldwide, with branches in various countries, specializing in military responses to kaijus.

The Japanese branch of GDF possesses mechanized equipment such as tanks and fighter jets. They respond promptly and deploy when kaiju appear. Additionally, while collaborating with SKIP on incident resolutions, these organizations remain independent entities.

Although detailed information about kaiju is widely shared among all research institutions, the GDF enforces strict information control measures regarding matters related to space, especially space kaiju. The confidentiality level for such data is extremely high, and the full information is not disclosed to the public.

History

Pre-Ultraman Arc

Onyx 1

16 years ago, Onyx caused "K-DAY" by falling to the earth.

Sixteen years ago, the GDF observed the sudden appearance of a "mysterious substance with properties similar to a black hole" located 1,000 kilometers from Earth. All GDF branches worldwide immediately went on high alert. Shortly after, the substance rapidly contracted and fell to Earth. Upon impact, it released gravitational waves and high-energy particles, disrupting Earth's geomagnetic field. This event triggered the awakening of dormant kaiju across the planet and became known as "K-DAY."

Further analysis revealed that this substance was continuously absorbing energy from space, and its energy reserves were nearing critical levels. Once the accumulation reached its limit, it would result in a cataclysmic explosion equivalent to a supernova. The substance was eventually assigned the codename "Onyx." Due to its extreme danger, the GDF enforced a strict information lockdown to prevent widespread panic. A global search was launched to track Onyx’s location. However, because of the unique properties of the waves it emitted, Onyx’s location could not be confirmed until new measurement equipment was developed, ultimately revealing it was within Japan.

Ultraman Arc

In the past 16 years, the GDF has successfully defeated various kaiju threats from different regions multiple times. However, three months ago, a mysterious giant suddenly appeared in Hoshimoto City and defeated several kaiju, drawing significant attention and prompting thorough investigations by the GDF and other related agencies.

When Shagong appeared at Hayama Chemical Industries, the GDFJ quickly deployed ground troops and fighter jets to launch an attack. Despite these efforts, they were unable to stop Shagong's destruction. At this critical moment, the mysterious giant reappeared and defeated Shagong within just three minutes. Following this event, the GDFJ publicly announced the giant's name as "Ultraman Arc."

Onyx 2

Onyx appeared 16 years later somewhere in the forest east of Hoshimoto City.

The GDF continued to monitor the situation in Hoshimoto City, and the Space Division established the "Ultraman Arc-related Fact Management Unit," or "Arc FAM," to oversee the activities of Ultraman Arc. Following the Givas incident, GDF investigations revealed that the green beams detected by Givas were due to Onyx’s high-energy reactions, which they referred to as "Crescent." Upon further analysis, they confirmed that Onyx was located in the Kitsune Forest area in the eastern part of the city.

At the same time, ONYX reappeared as Zadime became more active. Any online posts mentioning Onyx were swiftly deleted by GDF authorities. While maintaining strict information control, the GDF planned to transfer Onyx to a research facility and attempted an aerial recovery. However, due to Onyx’s ability to distort the surrounding space, approaching aircraft were destroyed by the intense spatial distortion. When Zadime eliminated the spatial distortion and began attacking Onyx, Ultraman Arc intervened. Ultimately, Arc absorbed Onyx’s explosive energy and transformed it into a new armor, thus saving Earth from destruction.

Members

Space Science Division

The Space Science Division (宇宙科学局, Uchū Kagaku-kyoku) is the space research and investigation division of the GDF.

Nibuya HD 001
Main article: Nibuya

Nibuya (丹生谷) is the team leader of the GDFJ Space Science Division and the supervisor of Shu Ishido.


Shu Ishido
Main article: Shu Ishido

Shu Ishido (石堂 シュウ, Ishidō Shū)[1][2] is the 25-year-old special investigator assigned by the Space Science Division of the GDF joining at SKIP.


Kaiju Control Unit

The Kaiju Control Unit (怪獣対策班, Kaijū Taisaku-han) is the division responsible for direct confrontation with kaiju threats.

Former Members

Nakamura SKIP
Main article: Ichiro Nakamura

Ichiro Nakamura (中村 イチロウ, Nakamura Ichirō) was a member of the GDF in the past. He joined the organization after attracting the attention of SKIP after successfully capturing a crocodile turtle named Alligatortois in the past.

Arsenal

Attire

Equipment

  • Elemagun (エレマガン, EreMagan): A GDF-exclusive electromagnetic anti-Kaiju gun, primarily used for combating and subduing Kaiju threats.
  • Multipurpose Sensor (多機能測定器, Takkinō Sokuteiki)[3]: The multifunctional sensor specially designed by the Space Science Division can investigate the source of any type of electromagnetic wave.
  • Missile: The main weapon used to attack kaijus. The Full Moon's Answer
  • SAR Satellite (SAR衛星, SAR Eisei): Owned by the GDF Space Science Division, this artificial satellite features synthetic-aperture radar capabilities. It can focus microwaves using the spotlight mode to detect objects up to 500 meters below the Earth's surface. However, high-level authorization is required before use.
  • Sonic Weapon (音響兵器, Onkyō Heiki)[4]: A specialized sonic emitter mounted on GDF vehicles. It is developed based on the analysis of the sound emitted by the cosmic warrior Zangill's "Demon Slicing Meteor Sword." The device converts the sword's sound into high-frequency vibration waves, designed to disrupt spectral monsters and force them to transition from an incorporeal to a physical state. Demon Slicing Meteor Sword
  • Parabolic Collecting Device (パラボラ型収束装置, Parabora-gata Shūsoku Sōchi): A dedicated parabolic particle focusing apparatus designed to collect and project "Onyxium Particles." These particles are a byproduct released when Ultraman Arc's Galactic Armor uses a space-time tunnel for instantaneous travel. Once sufficient particles are gathered, precise projection onto a space-time rift allows for the stable sealing of the rift.

Mecha

  • Combat Vehicle MBT (戦闘車両MBT, Sentō Sharyō Emu Bi Chi)[5]/Combat Vehicle "Defense Force MBT" (戦闘車両 「防衛隊MBT」, Sentō Sharyō `Bōei-tai Emu Bi Chi')[6]: The GDF's primary ground combat vehicle. GDF MBTs are modified Type 10 tanks, and are equipped with a railgun-like turret and side skirts.
  • Aircraft MRF (航空機MRF, Kōkūki Emu Aru Efu)[5]/Global Defense Force State-of-The-Art Fighter Aircraft "Defense Force MRF" (地球防衛隊最新式戦闘機「防衛隊MRF」, Chikyū Bōei-tai Sai Shinshiki Sentō-ki `Bōei-tai Emu Aru Efu')[7]: The GDF's mainstay multi-role fighter. Primarily used for air strikes on kaiju from aerial zones. Armed with missiles and laser weaponry.

Gallery

Ultraman Arc

Trivia

  • This is the third defense organization to continue using the same Japanese name after EDF and GGF.
  • In the creative setting of this series, the protagonist is not affiliated with any defense team. However, Takanori Tsujimoto made an important suggestion: not to create a world without a defense team. He believed that in a world threatened by kaiju, it would be very unnatural if there were no human forces resisting them. Based on this suggestion, the GDF was incorporated into the setting to rationalize the plot.[8]

References


Defense Teams
Showa Defense Teams SSSP, Defense Force | TDF (UG, MAT, TAC, ZAT, MAC, UGM) | Science Guard Party
Heisei Defense Teams UMA | WINR | HEART | Mydo | TPC (GUTS, Super GUTS, Black Buster Corps, Neo Super GUTS) | GUARD (XIG) | GOKAZOKU | SRC (EYES, Team SEA), JADF | BCST, JSDF | TLT (NR) | UDF (DASH) | GUYS | DEUS | ZAP SPACY | Team U | UPG | UNVER (Xio) | VTL | AIB
Reiwa Defense Teams EGIS | GAF (STORAGE) | TPU (GUTS-Select) | SSSP | GGF (SKaRD) | KDF | SKIP, GDF | KSCT, NDF
Other Defense Teams Inter Galactic Defense Force | Space Patrol | MIGHTY JACK | SRI | SGM | Team Mouri | SAT | SAF | PAT | Koseidon Corps | MAT | SWORD | SSSP | USP | GIRLS