Kento Handa as Takumi Inui / Kamen Rider Faiz

Yuria Haga as Mari Sonoda

Rumika Fukuda as Reina Kurumi/ Kamen Rider Muez

Daiji Asakawa as Jotaro Kikuchi

Rui Yanagawa as Hisao

Ryûnosuke Hashino as Kouta

Kanon Matsuzawa as Kei

Amane Shindo as Smart Lady

Yuki Sakai as Doctor

Haruka Shibai as Doctor

Teruhiko Shirayama as Doctor

Isao Kumakura as Corpse

Maki Matsuura as Dry Cleaning Customer

Hizuru Sato as Old Lady

Seiji Takaiwa as Ramen Shop Regular Customer

Kohei Murakami as Masato Kusaka / Kamen Rider Kaixa

Mitsuru Karahashi as Naoya Kaido/Snake Orphnoch

Ray Fujita as Kitazaki

Tōru Ōmura as (voice)

Kakeru Itou as (voice)

Tsuyoshi Yamazaki as (voice)

Keisuke Yamamori as (voice)

Ayaka Takata as (voice)

Takehiko Kano as Smart Brain Equipment (voice)

Tom Constantine as Orphnoch Extermination Corps Member (uncredited)