Kamen Rider Revice Feature Film Spoilers
Deadmans attack a Genetic Research Institute and they steal Spider Vice Stamp. Revice Driver (not confirmed yet / temporary belt name) was also seen in this Institute
During Kamen Rider Revice's transformation, Ikki-kun breathes into the Stamp saying "Ha~" and behind him, a Chat Conversation like thing shows up. A chat conversation with Vice?
Kamen Rider Revi's Leg turns into Dinosaur and he can perform a Powerful Kick.
Kamen Rider Vice can breathe fire from his mouth and he can even generate a tail.
When Kamen Rider Revi stamps the Pteradon Vice Stamp on Kamen Rider Vice's chest, Vice turns into a Drone Bike.
When Megalodon Vice Stamp is used, Kamen Rider Revi transforms into a new form. He looks a bit like Kamen Rider Decade based on his appearance.
Kamen Rider Revi and Kamen Rider Vice can fuse to form Megalodon and performs their Finisher.
When the stamps on used on different items like a Bath Duck, Vice can possess that thing and become huge.