When the protagonist transforms into the pink and blue Rider, Kamen Rider Revi, Vice gets a physical form and becomes Kamen Rider Vice, the pink and black Rider. Vice has forms based on the Tyrannosaurus Rex, Megalodon, and a Cactus depending on what stamp Revi activates. Though he hasn't made his official TV debut yet, since he will make his debut appearance in Superhero Senki, his book is also stored at the Agastia Base alongside with the stories of other Kamen Riders.
[Source: HeroShock]