Kamen Rider

Doktor G

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This article is about a/an villain in Kamen Rider V3.
Doktor G
Kani Laser
Gender: Male
Series: Kamen Rider V3
Villain Type: General
Affiliation: Destron
Homeworld: Earth
First Appearance: Terrifying Commandant: Doktor G!!
Last Appearance: Kamen Rider × Super Sentai: Super Hero Taisen
Number of Episode
18 (V3)
1 (Movie)
Full list of appearances
Actor: Jōtarō Senba (V3)
Ritsuo Sawa (Voice of Kani Laser)
Tatsuhito Okuda (Super Hero Taisen)

Doktor G (ドクトルG Dokutoru Gē, 13-30) is Destron's first general in a knight armor who originated from Germany and was given charge to oversee their operations in Japan. He is the leader of the Mechanical Army. He wields a battle axe, a short sword, and a knife. In the comics, his scorpion-shaped helmet could transform into a deadly scorpion, but this didn't happen on TV. Most of his monsters are cyborgs that are the same type as Destron Leader's cyborgs. Pronounced his enemy's name "Kamen Raaaaida V3!".

After numerous failures, Doktor G summoned the spirits of his dead, evil warriors to transform him into Kani Laser (カニレーザー Kani Rēzā, 30) for his final battle with Kamen Rider V3. Despite putting up a valiant battle, he was destroyed by V3's V3 Tailspin Return Kick.



Doktor G arrived in Japan after he was contacted by Great Leader of Destron who gave him orders to oversee their operations and to defeat Kamen Rider V3, Shiro Kazami. Terrifying Commandant: Doktor G!!

Doktor G was responsible for the resurrection of Shocker's key figures (Colonel Zol, Doctor Shinigami, Ambassador Hell, and General Black). Zol, Death, Hell & Black Rise from the Grave


After so many of his plans were thwarted by V3 and his laboratory was destroyed by a special Interpol group known as the "Destron Hunters." He personally confronted the hunters and killed them all (except for Ken Sakuma who was saved by V3).

Doktor G set a trap for V3 as an act of redemption for his failure as a Destron Commander, he kidnapped Tōbei Tachibana and the members of the Kamen Rider Scouts to lure V3. Doktor G summoned the spirits of his dead, evil warriors to transform him into Crab Laser for his final battle with Kamen Rider V3. Despite putting up a heroic battle, he was destroyed by V3's V3 Tailspin Return Kick. Doktor G! The True Form of Evil is...?

Decade (Super Hero Taisen)

Main article: Narutaki
IMG 0682

Doktor G in Super Hero Taisen

This version of Doktor G (ドクトルG Dokutoru Gē) is a knight armored general of the revived Dai-Shocker in Super Hero Taisen. He's the second in command of the organization, below only its Great Leader, and standing above the other Great Commanders recruited by it. He wields an axe in battle and is able to assume the form of the Inhumanoid Kani Laser (カニレーザー Kani Rēzā), the modernized/Narutaki version of Kani Laser.

New Kani Laser

He is the driving force behind recreating Dai-Shocker, reviving and recruiting past villains and placing Tsukasa Kadoya, Kamen Rider Decade, as leader for the express purpose of defeating Dai-Zangyack and its leader, Captain Marvelous, Gokai Red and also the leader of the Super Sentai team Kaizoku Sentai Gokaiger. His Kani Laser form was much stronger than the original, resisting against the combined forces of various Sentai members and Riders, including Kamen Rider V3 himself, who defeated his previous incarnation. In the end, he was defeated by the combined efforts of Kamen Rider Decade, Ryuki, Blade, and the Goseigers, who gave the three riders new Gosei Cards. However, after being defeated, his appearance changes to Narutaki, who tells Decade that his journey will continue and vanishes behind a dimensional wall.

In fact, this version of Doktor G is just another one of Narutaki's disguises, similar to the Colonel Zol guise that Narutaki used when he joined Super Shocker. Unlike that time though, here Narutaki showed abilities and powers not only similar, but significantly stronger than the original's. Kamen Rider × Super Sentai: Super Hero Taisen


  • Height: 176 cm
  • Weight: 51 kg

He wore a knight armor and wielded a battle axe, a short sword, and a knife. He also wears a Scorpion-shaped helmet, possibly to show his allegiance to Destron. As Kani Laser he could fire a laser from his head called the Scorpion Laser and use magic to turn the area around him dark. In the manga, his helmet could transform into a deadly scorpion.

Video game appearances

Kamen Rider V3 video game

Doktor G/Kani Lazer is among the Destron cyborgs which appear in the Kamen Rider V3 video game.

Kamen Rider SD

Main article: Doktor G (SD)

Doktor G: A member of GranShocker. He was among the meeting with the Great Leader.

Behind the scenes


In the original Kamen Rider V3, Doktor G was portrayed by Jōtarō Senba (千波 丈太郎 Senba Jōtarō). As Kani Lazer, he was voiced by Ritsuo Sawa, his suit actor was Masaru Okada. [1]

The Doktor G seen in Super Hero Taisen is played by Tatsuhito Okuda (奥田 達士 Okuda Tatsuhito), who portrays Narutaki in Kamen Rider Decade.


Leiurus Acutia

Scorpion Lord Leiurus Acutia



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