Icon-w.png This article is about a/an Dopant identity in Kamen Rider W.

Weather Dopant (ウェザー・ドーパント Wezā Dōpanto) is the Dopant form assumed when one uses the Weather Gaia Memory.

Dopant Form

Weather Dopant

The Weather Dopant is armed with the whip-like Weather Mine (ウェザーマイン Wezā Main) and has control over the elements (which can augmented into the Weather Mine): intense sunlight, heavy rain, lightning, tornadoes, and freezing snow.


Shinkuro Isaka

Shinkuro Isaka

Main article: Shinkuro Isaka

The main user of the Weather Memory was Shinkuro Isaka (井坂 深紅郎 Isaka Shinkurō),the head physician at the Isaka Medical Clinic. Ten years prior, finding no meaning in his life, he encountered Ryubee Sonozaki attacking a group of people as the Terror Dopant. This brought maddening joy to the doctor and he made a point to get the Terror Memory for himself, experimenting on himself with numerous Gaia Memories with various Living Connectors on his body before Shroud gave him the Weather Memory in the hope that he would be powerful enough to eliminate Ryubee. As the Weather Dopant, he originally tested his abilities in a series of murders which included Ryu Terui's family, to whom he was only known as the man with the W Memory (W(ダブリュー)のメモリを持つ男 Daburyū no Memori o motsu otoko). Isaka did not use a Gaia Driver, as he felt he didn't need the protection provided, as he was unaffected by their corruption due to him being already intensely psychotic, and the limits imposed on the power of Gaia Memories annoyed him greatly. The Weather Dopant could also withstand Maximum Drives, as he had augmented the Weather Memory with other Gaia Memories' powers. This skill and his knowledge of Dopant physiology made him an ally to the Museum. After his identity was discovered during his failed attempt to add the Invisible Memory to his arsenal, Isaka took refuge in the Sonozaki Estate where he convinced Saeko to take out her father so she could control the Museum and he could get the Terror Memory. Though he originally saw Saeko as merely one of his pawns and research material, he admitted to having developed feelings for her. During his attempt to absorb the Quetzalcoatlus Memory, the Weather Dopant was finally defeated by Kamen Rider AccelTrial's Machine Gun Spike Maximum Drive, shattering the Weather Memory. Shortly afterwards, Isaka's excessive use of Gaia Memories caused his body to become covered in Living Connectors that dissolved him away into nothingness as he told the Kamen Riders that Shroud would be their end. Shroud later expressed regret to Ryu for giving Isaka the Weather Memory, having no idea of what a monster he would become with the Memory.

T2 Weather Dopant

T2 Weather Dopant's human form.

Main article: T2 Weather Dopant

During the events of W Forever, after all of the T2 Gaia Memories are littered across Futo City seeking civilians and turning them into rogue Dopants, one of them, the Weather Memory dropped on a man and turned him into the T2 Weather Dopant (T2 ウェザー・ドーパント T2 Wezā Dōpanto), alongside the T2 Nasca Dopant. They were reverted back to human forms by Kamen Rider Accel whom uses Memory Break on them.

Behind the Scenes

Concept Art

Weather Dopant concept art

Weather Dopant was designed by Katsuya Terada (寺田 克也 Terada Katsuya).

Icon-w.png Kamen Rider W
Narumi Detective Agency
Shotaro Hidari - Philip - Akiko Narumi - Sokichi Narumi† - Tokime
Memory Drivers
Double Driver - Accel Driver - Lost Driver
Gaia Memory-related
Gaia Memories - Memory Gadgets - Fang Memory - Xtreme Memory - Trial Memory - Gaia Memory Enhancing Adapter
Metal Shaft - Trigger Magnum - Engine Blade - Skull Magnum - Prism Bicker - Eternal Edge - Shroud Magnum
RevolGarry - HardBoilder - Gunner A - Diablossa - SkullBoilder - SkullGarry - HardMammother
The Fuuto Irregulars
Santa-chan - Watcherman- Queen & Elizabeth - Isamu Bito
Futo Police Department
Ryu Terui - Mikio Jinno - Shun Makura
Museum and the Dopants
Foundation X
The Sonozaki Family: Terror - Claydoll - Taboo/R Nasca - Nasca - Smilodon - Masquerade Dopants
Dopants: Magma Dopant - T-Rex Dopant - Money Dopant - Anomalocaris Dopant - Cockroach Dopant - Sweets Dopant - Virus Dopant - Violence Dopant - Arms Dopant - Bird Dopant - Ice Age Dopant - Triceratops Dopant - Liar Dopant - Puppeteer Dopant - Invisible Dopant - Nightmare Dopant - Beast Dopant - Zone Dopant - Yesterday Dopant - Quetzalcoatlus Dopant - Gene Dopant - Jewel Dopant - Old Dopant - Utopia Dopant - Energy Dopant
Movie Exclusive Villains: Dummy Dopant - Heat Dopant - Trigger Dopant - Metal Dopant - Luna Dopant - Cyclone Dopant - Bat Dopant - Spider Dopant - Kamen Rider Eternal - Commander Dopant - Eyes Dopant
Novel-Exclusive Villains (The One Who Continues After Z): Zoo Dopant - Zero Dopant - Queen Bee Dopant - Flower Dopant - Elephant Dopant - Dolphin Dopant - Salamander Dopant - Fish Dopant - Bird Dopant - Ape Dopant - Bee Dopants
Manga Exclusive Villains (Futo Detective): Road Dopant - Aurora Dopant - Meganeura Dopant -Brachiosaurus Dopant - Scream Dopant - Alcohol Dopant - Puzzle Dopant - Reactor Dopant - Antlion Dopant - Owl Dopant - Trash Dopant - Caracal Dopant - Toadstool Dopant
Yukiji Bando - Kazuha - Hideo - Mamoru Nikaido - Sabu
Katsumi Daido - Maria S. Cranberry - Reika Hanehara - Kyosui Izumi - Gozo Domoto - Ken Ashihara
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