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"I'll evolve and transcend over this weak human existence (laughs). Ancient power, transform me into the giant of light!"

―Keigo Masaki gloating over his (forced) assimilation with Evil Tiga.
Keigo Masaki
Ultrmn Tg Evl Tg
Ultra: Evil Tiga
Age: 26
Gender: Male
Transformation Item Spark Lens/Light Converter
Home world: Planet Earth (Giants of Light Timeline)
First Appearance: Ultraman Tiga Episode 43: "Land Shark" (1997)
Last Appearances Ultraman Tiga Episode 52: "To the Shining Ones" (1997)
Type: Villain (later becomes Anti Hero)
Family {{{Family}}}
Affiliation GUTS
Portrayed by Takashi Kora

Keigo Masaki (マサキ・ケイゴ Masaki Keigo?) was the CEO of Psytech Corporation and one of the world's leading physicists. He found another Ultraman statue in Kumamoto, similar to the ones that were found in the Tiga pyramid and desired to bond with it, eventually becoming the being known as Evil Tiga.

History

Ultraman Tiga

According to Horii of GUTS, Masaki was a genius even during his High School days and he took his intellect to create TPC and The Stellar Development Department.

Once he had learned of Daigo's assimilation with Ultraman Tiga, as well as the fact that they both bore similar DNA to Tiga, Masaki felt Daigo did not deserve the perceived monopoly he had on the power of light. Instead he believed he himself deserves the right to inherit the light and transcend his humanity to become god-like for his own selfish and greedy intent. Masaki felt that it was the duty of the Ultramen to guide man's evolution, in effect control them, where as the Ultramen had always only served mankind as their protectors. For this reason he felt Daigo was wasting his time with trivial matters and believed he only helped people for his own satisfaction of being a hero. To prepare himself, Masaki made an alliance with Professor Tango of TPC (a scientist who felt he was not given proper credit for the work he had done.) and Keigo himself trained his body to be strong and powerful, and physically beat an exhausted Daigo (the latter of whom just defeated Geo Shark in a trap that was setup by Masaki himself,) and thus stole the Spark Lens from him. After Daigo was led to Masaki's base in a cavern by a stray dog, Daigo watched in horror as Masaki placed the stolen Spark Lens in a converter, changing his body into light particles and merging with the Ultraman statue. All the while Daigo was unable to stop him as the converter was covered by an electric barrier.

However, Keigo's greedy and selfish intentions corrupted the new giant of light into a giant of darkness known as "Evil Tiga," causing him to start rampaging into the city with his uncontrollable power. Soon another creature arose to face him the Ultra-canine Gardi, who had come to stop his corrupted master. Masaki trounced Gardi. GUTS blasted him to stop, but he blasted the jets. Ultimately, Daigo was able to recover the Spark Lens as he forced himself to endure the electricity and was able to break through by force of will to the Spark Lens. When Tiga arrived, Evil Tiga murdered Gardi, vexing the warrior of light with that act. After a bitter fight, Tiga gained the upper hand and wounded Evil Tiga enough that he could fire his Zepellion Beam, vaporizing his corrupted counterpart. While sharing most of Tiga's powers, Evil Tiga also shared his weakness of only being able to remain on Earth for a certain period of time. With Evil Tiga vanquished, Keigo was captured and imprisoned by authorities.

At the end of the series, Keigo was recruited by GUTS to help them revive Ultraman Tiga after his defeat at Gatanozoa's hands. While GUTS kept Gatanozoa busy, Keigo went down in a submarine and used a beam of light (similar to the one he used to become Evil Tiga) in an attempt to revive the hero and while Gatanozoa stopped him, Keigo's attempt revived Daigo deep inside the statue, allowing him to see the children of the world call out to him and use their light to revive Tiga as Glitter Tiga, thus allowing Keigo to redeem himself for his misdeeds.

Power/Abilities

  • Intelligence: As stated by Hori, Keigo was a child genius and one of, if not the brightest scientists on Earth, using his knowledge he created Geo Shark, a mechanical construct that was as powerful as the monsters GUTS usually fought. He was also able to hack into GUTS communication and remotely take over one of their fighters. Later his knowledge of Ultraman mechanics allowed Daigo to harness the light of the worlds' youth to fight the king of darkness.
  • Conditioning: Due to his obsession with gaining Ultra powers, Keigo honed his body to its limits to prepare himself for his self deluded role, he was able to easily trounce a tired Daigo.
  • Transformation: As he bears Ultraman DNA like Daigo, in theory Keigo should also possess the ability to transform into living light under danger, it is unknown if he would transform into Evil Tiga as Daigo transforms into Tiga.

Trivia

  • Bearing the same DNA with Daigo, at the end of the series, Keigo says that he also has had the dream about the previous destruction of mankind just like Daigo did.

See Also

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 |
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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