Shinkuro Isaka, who was able to become the Weather Dopant was a minor antagonist in middle story part of Kamen Rider W, and the archenemesis of Kamen Rider Accel.
Kamen Rider W
He was the 42 year old head physician at the Isaka Medical Clinic. Ten years ago, finding no meaning in his life, he encountered Ryubee Sonozaki attacking a group of people as the Terror Dopant. This brings 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. He originally tested these abilities in a series of freezing, electrocution and drowning murders which included Ryu Terui's family, to whom he was only known as the "man with the W Memory.
Publication Information
- Dopants : Shinkuro Isaka
- Japanese : 井坂 深紅郎
- Type : Dopants
- Known As :
- Related :
- Gender : Male
- HomeWorld : Earth (Main Timeline Continuity)
- Season : Kamen Rider W
- First Appeareance : Kamen Rider W Episode 20 : The I Doesn't Stop/Kamen Rider Style
- Last Appeareance : Super Hero Taisen GP : Kamen Rider 3
- Number of Appeareance :
- Potrayer : Tomoyuki Dan
- Main View : Full Episod
During his attempt to absorb the Quetzalcoatlus Memory, the Weather Dopant was finally defeated by Kamen Rider Accel Trial's Machine Gun Spike Maximum Drive, shattering the Weather Memory. Shortly afterwards, Isaka's excessive use of Gaia Memories causes his body to become covered in Living Connectors that dissolve him away into nothingness as he tells the Kamen Riders that Shroud will 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.
Kamen Rider × Super Sentai : Super Hero Taisen
However he is revived in Super Hero Taisen as a member of Dai-Shocker, who teamed up with Dai-Zangyack and fought against the army of Kamen Riders and Super Sentai. He is seen fighting Red Flash in the first aerial attack scene along with Me-Garima-Ba, and with DynaBlue and GingaRed in the next scene. In a scene of the trailer, he was seen fighting his enemies Kamen Rider Double and Accel.
Super Hero Taisen GP : Kamen Rider 3
Through an alteration to history rewritten by Shocker's History Modifying Machine, the Weather Dopant is among the many monsters that serve the evil organization that rules the world in this alternate timeline created by Kamen Rider 3's assassination of the Double Riders in 1973. During the final battle against the Kamen Riders, the Weather Dopant is destroyed by V3's V3 Kick.
Game Appearances The Weather Dopant appears as a monster in the video game All Kamen Rider: Rider Generation. The Weather Dopant appears as a boss in the video game Kamen Rider: Battride War. Weather Dopant is able to create tornadoes that are quite difficult to dodge. He can also spray a freezing mist and can shoot lightning. Just like El of the Water, he tends to use environmental obstacles like tornadoes and lightning while the player advances through the game. He does not have much of a weakness, so it's quite hard to battle the Dopant.
- Kamen Rider Batton-Line
Form
Weather Dopant
- Main Article : Weather Dopant
- Height : 248cm
- Weight : 115kg
- By using Weather Memory, Isaka is able to transform into the Weather Dopant. As Weather Dopant, he was armed with the whip-like Weather Mine and had control over the elements (which can augmented into the Weather Mine): intense sunlight, heavy rain, lightning, tornadoes, and freezing snow. He originally tested these abilities in a series of murders which include Ryu Terui's family, to whom he was only known as the man with the W Memory.
- Isaka does not use a Gaia Driver, as he feels it only limits the power of Gaia Memories, and he is unaffected by their corruption as he was already intensely psychotic. The Weather Dopant can also withstand Maximum Drives, as he has augmented the Weather Memory with other Gaia Memories' powers. This skill and his knowledge of Dopant physiology makes him an invaluable ally to the Museum.

















