"Granute, secret lifeforms, kidnap humans for "Dark Market Snacks." Shoma, from another world, transforms with Gochizo, a sweet-eating monster, into Kamen Rider Gavv via a mouth-like belt to stop Granute's attacks and save people."
Hidekazu Chinen
as Shoma Stomach / Kamen Rider Gavv
Yusuke Hino
as Hanto Karakida / Kamen Rider Valen
Nozomi Miyabe
as Sachika Amane
Kohei Shoji
as Rakia Amarga / Kamen Rider Vram
Takashi Tsukamoto
as Lango Stomach
Machi Chitose
as Glotta Stomach
Ryo Takizawa
as Nyelv Stomach
Ruito Koga
as Jeebh Stomach / Jeebh Jardak
Honoka Kawasaki
as Shita Stomach
Shintaro Asanuma
as Kenzo Suga / Kamen Rider Bake
Yohei Tadano
as Dente Stomach (voice)
Erena Kamata
as Lizel Jardak
Hiroki Yasumoto
as Bocca Jardak (voice)
Shuhei Handa
as Masaru Inoue
Arisa Nakajima
as Michiru Inoue
Ayu Shoji
as Gochizo / Agent (voice)
Kouki Sakurai
Hiroki Shimowada
as Frappeis Gochizo (voice)
Kurumi Madoka
as Puddinte Gochizo (voice)
Teruaki Sugihara
Director
Satoshi Morota
Takayuki Shibasaki
Kazuya Kamihoriuchi
Shojiro Nakazawa
Ryuta Tasaki
Junko Kōmura
Screenplay
Nobuhiro Mouri
Kaori Kaneko
Hiroki Uchida
Saburo Yatsude
Shotaro Ishinomori
Original Series Creator
Go Sakabe
Music
Takehiro Okawa
Executive Producer
Keisuke Shibataka
Producer
Naomi Takebe
Minami Takijima
Mayu Iida
Music Producer
Hiroshi Butsuda
Special Effects
Sekai
Theme Song Performance
Taiki Sato
Natsuki Sawamoto
Leiya Seguchi
Natsuki Hori
Keito Kimura
Yusei Yagi
Sota Nakajima