Kamen Rider Agito: Project G4

Toshiki Kashû

Shouichi Tsugami / Kamen Rider Agito

Jun Kaname

Makoto Hikawa / Kamen Rider G3-X

Yûsuke Tomoi

Ryo Ashihara / Kamen Rider Gills

Ryo Karato

Shiro Mizuki / Kamen Rider G4

Maju Ozawa

Risa Fukami

Rina Akiyama

Mana Kazaya

Touko Fujita

Sumiko Ozawa

Atsushi Ogawa

Tetsuya Sawaki

Jun Yamasaki

Toru Hojo

Akira Haneo

Mysterious Youth

Kazumasa Taguchi

Koji Kono

Akiyoshi Shibata

Takahiro Omuro

Tokimasa Tanabe

Taichi Misugi

Takeshi Masu

Yoshihiko Misugi

Akane Kimura

Sayaka Kahara

Rikiya Ôtaka

Rei Motoki

Shunsuke Nakamura

Customer in Hamburger Shop

Tsuyoshi Ujiki

Sayaka's father

Noriko Watanabe

Sayaka's mother

Hiroshi Fujioka

MPD Superintendent General

Yoko Gendai

BBQ Shop Clerk

Kenji Anan

Ant Lords (voice)

Kentarô Kaji

Senior Police

Ken Kano

Senior Police

Masahiro Noguchi

Senior Police

Shinji Matsubayashi

Risa Fukami's henchman

Hiroshi Kaneko

Risa Fukami's henchman

Yuki Anai

Ant Lord Formica Pedes (voice)

Kunihiko Yasui

Ant Lord Formica Pedes (voice)

Katsumi Shiono

Ant Lord Formica Pedes (voice), G4 Base Operator (voice)

Hiroyuki Shibamoto

Ant Lord Formica Eques (voice)

Hiromi Tsuru

Ant Lord Formica Regia (voice)