|This article is about a/an ally in Kamen Rider W.|
|Ally Type:||Shotaro Hidari's Informant|
|Season:||Kamen Rider W|
|Number of Episode|
Part in StoryEdit
Watcherman appears throughout the series as the aforementioned informant. He owns a Futo-kun Bicycle that he won in a mail-in contest. Akiko used the bike to chase after a garbage truck that had a doll that belonged to the Puppeteer Dopant.
In Kamen Rider W Forever: A to Z/The Gaia Memories of Fate, Watcherman finds the T2 Violence Gaia Memory, which forces him to become the T2 Violence Dopant. He is freed after Kamen Rider Double LunaJoker used the Joker Strange on him and Santa-chan as the Ice Age Dopant. He and Santa-chan explain what happened and end up in a free clinic where they stay during NEVER's attack.
- Height = 230cm
- Weight = 420kg
As the brutish Violence Dopant (バイオレンス・ドーパント, Baiorensu Dōpanto), his left arm is strong enough to destroy anything in its path, even enough to smash through cars. He can compress his body into a wrecking ball-like form called the Violence Ball (バイオレンスボール, Baiorensu Bōru) to cause more collateral damage.
- His bike -Fuuto-kun' was won in a sweepstakes. This is a nod to the actor appearing in Susunu Denpa Shonen where he was locked in a room until he won 1,000,000 yen worth of prizes from postcard sweepstakes.