"When the world is in danger, a new Rider rises"
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.
Shoma Stomach / Kamen Rider Gavv
Hanto Karakida / Kamen Rider Valen
Gochizo / Agent
Gochizo / Agent
Sachika Amane
Rakia Amarga / Kamen Rider Vram
Nyelv Stomach
Jeebh Stomach / Jeebh Jardak
Lango Stomach
Glotta Stomach
Kenzo Suga / Kamen Rider Bake
Shita Stomach
Dente Stomach
Lizel Jardak
Bocca Jardak
Masaru Inoue
Frappeis Gochizo
Michiru Inoue
Young Shoma
Puddinte Gochizo
Soji Shioya
Comel Amarga / Granute Lage 9's Younger Brother
Ritsu Sato
Sae Karakida
Magen
Street Musician Kani
