Full name: Shoma Stomach Race: A half-Granute, half-human hybrid (looks human) Personality: Pure, innocent, friendly, bright, and possesses a strong sense of justice. He works part-time at the handyman shop "Happy Palette." Likes: All kinds of sweets and snacks. Appearance: Wears a hoodie with a zipper on the abdomen. By opening this zipper, he reveals the Gavv on his stomach to transform. He transforms into Kamen Rider Gavv.

Full name: Hanto Karakida Race: Human Personality: Serious with a strong sense of justice and great initiative. On the flip side, he can be stubborn and emotional, speaking in a blunt and slightly rough manner. Dislikes: Sweets. Transformation: Transforms using the Valenbuster, and uses the Vram Custom Gear when in Frappe Custom Form. He becomes Kamen Rider Valen.

Full name: Lakia Amarga Race: Granute (usually disguised in human form) Personality: Listless and unsociable. Her catchphrase is "What a drag." Though blunt and unfriendly, she is kind-hearted and deeply loyal at her core. Once she trusts someone, she cherishes them and looks out for her comrades in her own clumsy way. She speaks in short, curt sentences and rarely shows emotion, but can become highly emotional when feeling intense anger or sadness. Transformation: Transforms using the Vram Custom Gear. She becomes Kamen Rider Vram.