Hazard Trigger

1="Hazard On! (Rock music)"

- Activation announcement

2="(Organic Fullbottle name)! (Inorganic Fullbottle name)! Super Best Match!"

- Insertion announcement

3="Don Den Gan! Don Den Gan!"

- Looping standby announcement

4="Gata Gata Gotton! Zuttan Zutan!"

- Vortex Crank cranking announcement

5="Uncontrol Switch Black Hazard! Yabei!"

- Hazard Form transformation announcement

6="Overflow!"

- Overflow Mode activation announcement

The Hazard Trigger (ハザード トリガー) is a turbocharger-like device that allows Kamen Rider Build to upgrade Best Matches into "Super Best Match" Hazard Forms.

Functionality
"Like I thought, they went out of control. Wanna know how you can stop their power? The forbidden item created by Katsuragi... Hazard Trigger."

- Blood Stalk revealing the Hazard Trigger to Sento

According to Blood Stalk, the Hazard Trigger is a forbidden Item created by Takumi Katsuragi. This device allows the user to boost their Hazard Levels to extraordinary levels, therefore strengthening them even more. However, similar to the Sclash Driver, using it has side effects - when used with a Build Driver, it could cause the user to lose their own sense of self. If a Smash uses it, they will die upon being defeated.

Hazard Forms

 * Kamen Rider Build
 * RabbitTank Hazard Form (Build Episode 20)
 * SmaphoWolf Hazard Form (Raising the Hazard Level ~7 Best Matches~)

Appearances

 * Icon-build.png Kamen Rider Build
 * Episode 19: The Forbidden Item
 * Episode 20: The Devil's Trigger
 * Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~