Fuestles

Fuestles is a set of whistles used by the Kamen Riders of Kamen Rider: Vampire King to access their arsenal. They are held in Fueslots.

Vampire King's Fuestles
Vampire King accesses his arsenal through whistles on his belt called Fuestles, which he gives to Batholomew to blow into to evoke a power-up. Three of the Fuestles serve to summon an allied Arms Monster from Castle Doran, who allows for Vampire King to Form Change & turns into a weapon. These three Fuestles' powers can be evoked immediately before Scott transforms, enabling him to transform to the respective form directly without going through Vampire King Form.
 * Wake Up: This Fuestle allows Vampire King to perform his Darkness Moon Break attack.
 * A different Wake Up Fuestle for the Zanvat Sword is attached to the hilt like a mask & is used to initiate its Final Zanvat Slash attack.
 * Garuru: This Fuestle summons Garuru from Castle Doran.
 * Basshaa: This Fuestle summons Basshaa from Castle Doran.
 * Dogga: This Fuestle summons Dogga from Castle Doran.
 * Doran: This Fuestle summons Castle Doran.
 * Buroon: This Fuestle summons Buroon from Castle Doran & turns the Machine Vampira into the Buroon Booster.
 * Tatsulot: This Fuestle summons Tatsulot from Castle Doran. It is different from Vampire King's other fuestles in that it is red instead of transparent & does not appear to be stored on Vampire King's belt.

Cross' Fuestles
Cross has six Fuestles like Vampire King, stored in silver Fueslots. They include:
 * Knuckle: This powers up the Cross Knuckle to become the Broken Fang. When activated, the Cross Belt announces "Cross Knuckle - Rise Up" prior to the execution of the Broken Fang finisher, primarily used in 1896.
 * Calibur: This powers up the Cross Calibur in Calibur Mode. When activated, the Cross Belt announces "Cross Calibur - Rise Up" prior to the execution of the Cross Judgement finisher, primarily used in the present year.
 * Powerd: This Fuestle summons Powerd Crosser.
 * Garuru Fake: A Fuestle that copies the frequency of Vampire King's Garuru Fuestle, with the Cross Belt announcing "Garuru Fake" as Cross hijacks the Garuru Saber when it is summoned by Vampire King.
 * Basshaa Fake: A Fuestle that copies the frequency of Vampire King's Basshaa Fuestle, allowing Cross to hijack the Basshaa Magnum when summoned.
 * Dogga Fake: A Fuestle that copies the frequency of Vampire King's Dogga Fuestle, allowing Cross to hijack the Dogga_Hammer when summoned.
 * Riser: A Fuestle found in the grip of the Crossriser that allows Rising Cross to perform the Final Rising Blast finisher.