Shin Kazamatsuri

Kamen Rider Shin (仮面ライダーシン) is the main protagonist in the Japanese tokusatsu movie Shin Kamen Rider: Prologue. He is the second Kamen Rider to mutate into his other form instead of transform (the first was Kamen Rider Amazon), as well as the first whose transformation affect his outfits.

Shin Kazamatsuri
Shin Kazamatsuri (風祭真, Kazamatsuri Shin?), is a motorcycle racer who gave everything up to volunteer for his father's experiment, not knowing the true ambitions of his father's partner or the organization they worked for. He struggles to uncover the conspiracies, not completely knowing just how much his loved ones are truly involved.

Kamen Rider Shin
Referred as "Cyborg Soldier Level 3"' (改造兵士レベル3 Kaizō Heishi Reberu Surī)?), Shin mutates into a mostly organic insectoid with enhanced strength and regenerative abilities.

Other Appearances
Although Shin Ishikawa has never returned to portray the character Shin Kazamatsuri, a generic "Kamen Rider Shin" character has appeared in later Kamen Rider live action productions.

Kamen Rider Decade: All Riders vs. Dai-Shocker

 * Shin, along with every other Showa Rider, appears in Kamen Rider Decade: All Riders vs. Dai-Shocker. In the Internet spinoff films accompanying the movie, Shin is identified as the 13th official Kamen Rider of the Showa era.

OOO, Den-O, All Riders: Let's Go Kamen Riders

 * Kamen Rider Shin appears in OOO, Den-O, All Riders: Let's Go Kamen Riders. He reappears alongside the other Showa era Riders.
 * Although Shin's human form isn't shown in the movie itself, he has no lines and isn't listed in the credits, Shin is confirmed to be Shin Kazamatsuri by the movie's official website.

Video Game

 * Kamen Rider Shin is a playable character the 2011 Nintendo DS video game All Kamen Rider: Rider Generation.