Kabuki

Kamen Rider Festive Demon is one of the many Oni Kamen Riders in the fanfictional series Kamen Rider: Echo Demon.

Kabuki
Kabuki is a Taiko Oni who double-crosses Dustin & the others into believing he cares for humans. He has a human form, even though it's unknown if he has a human name.

Demon Transformation Tuning Fork
A black tuning fork transformation device.

Demon Transformation Tuning Fork - Sword Mode
The Tuning Fork's sword form.

Sound Attack Drum
A taiko buckle.

Sound Attack Club - Green Fierceness
A pair of drum sticks Sound Attack weapon.