Stone

Stone (ストーン) is an architecture otaku who is introduced to Sokichi Narumi by Isamu Bito to help them solve the "Spider Man" case with his lock picking talents. Helping Sokichi sneak into the Yaguchi Talent Agency, Stone is captured and murdered by the Bat Dopant. He appears in the film Kamen Rider × Kamen Rider OOO & W featuring Skull: Movie War Core when the Pteranodon Yummy uses the Memory Memory to reveal the events of Sokichi Narumi's past.

Stone is portrayed by Shiro Tsubuyaki (つぶやき シロー).