Akai

Akai (赤井), otherwise known as the Cactus Orphnoch (カクタスオルフェノク), is one of the three bounty hunters sent to take back the Faiz Gear. Akai is an impulsive partner of Midorikawa who intercepts Keitaro with the Faiz Gear.

Taking the belt from Keitaro, Akai uses the Faiz Gear to backstab Midorikawa before going after Takumi and company. But with the Auto Vajin's aid, Takumi regains the Faiz Gear and kills the Cactus Orphnoch with the Crimson Smash.

Arsenal

 * SB-555B Faiz Driver - Faiz's transformation belt.
 * SB-555P Faiz Phone - The control unit of the Faiz Gear.
 * Faiz Mission Memory - A small metallic card key containing the information of the Faiz Armor.
 * SB-555C Faiz Shot - Digital camera-shaped knuckle-duster.
 * SB-555B2 Faiz Pointer - A laser pointer which enables to produce an energy drill deathblow.

Portrayal
Akai is portrayed by Katsuyuki Yamazaki (山﨑 勝之). Meanwhile, the suit actor for Kamen Rider 555 is Seiji Takaiwa.

Etymology
Akai and his bounty hunter partners, Aoki and Midorikawa are named after colors, Akai from Red (赤).