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.
as Shoma Stomach / Kamen Rider Gavv
as Hanto Karakida / Kamen Rider Valen
as Sachika Amane
as Rakia Amarga / Kamen Rider Vram
as Lango Stomach
as Glotta Stomach
as Nyelv Stomach
as Jeebh Stomach / Jeebh Jardak
as Shita Stomach
as Kenzo Suga / Kamen Rider Bake
as Dente Stomach (voice)
as Lizel Jardak
as Bocca Jardak (voice)
as Masaru Inoue
as Michiru Inoue
as Gochizo / Agent (voice)
as Gochizo / Agent (voice)
as Frappeis Gochizo (voice)
as Puddinte Gochizo (voice)
