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

"Game Start!"
―announcement before fighting[src]

"Game Over!"
―announcement before the finishing move[src]

"Time up!"
―announcement before the end of the fight[src]

Ken Ashiwara (葦原 賢 Ashiwara Ken) was an expert marksman member of NEVER. In Kamen Rider W Forever: A to Z/The Gaia Memories of Fate, he becomes the Trigger Dopant (トリガー・ドーパント Torigā Dōpanto).


Mortally wounded, Ken Ashiwara dies for the first time.

He is a young man with knowledge of various firearms. He was a former military firearms expert before he was killed in a gunfight, leaving behind a family. He has a habit of proclaiming "Game start" when beginning combat.

Ken about to execute his finishing move.

Otherwise, he might say "Game over". He fights Kamen Rider Accel on several occasions both in and out of Dopant form (even defeating Terui once, by saying "Time up") before being defeated by AccelTrial's Machine Gun Spike Maximum Drive. Ken got the Trigger Memory and plugged to his hand just like the Gene Dopant.

Appearances in other media

Futo Detective

Ken with his fellow NEVER members as seen in Futo Detective

Ken and his fellow NEVER members appear in Futo Detective Chapter 77 Flashback.


As a member of NEVER, he is an expert marksman of the group, armed with a machine gun.

Dopant Form

Main article: Trigger Dopant

Trigger Dopant

―Transformation announcement[src]
  • Height: 190cm
  • Weight: 138kg

He used the T2 Trigger Memory to transform into the Trigger Dopant. As Trigger Dopant, he is armed with a large rifle attached to his right arm.

Behind the scenes


Ken Ashiwara is portrayed by Masayuki Deai (出合 正幸 Deai Masayuki).[1] He previously portrayed Eiji Takaoka/Bouken SilverIcon-crosswiki.png in GoGo Sentai BoukengerIcon-crosswiki.png. In Kamen Rider W Returns: Kamen Rider Eternal, Ken said "Good job" with a thumbs up, which is a nod to BoukengersIcon-crosswiki.png's signification. As the Trigger Dopant, his suit actor is Norihito Itō (伊藤 教人 Itō Norihito).

Concept Art

Trigger Dopant Dopant concept art

Trigger Dopant Dopant concept art was designed by Katsuya Terada (寺田 克也 Terada Katsuya).


  • His line before turning into a Dopant is the same as what would be Nico Saiba's pre-transformation line.