Seiji Takaiwa is a Japanese stunt performer and suit actor from Saitama Prefecture affiliated with Japan Action Enterprises. He is married to retired stunt performer and suit actor Rie Murakami. He has been cast in many leading roles in the Super Sentai and Kamen Rider series, portraying a diverse range of characters. He has been the suit actor of 17 out of the 19 lead Heisei Kamen Riders. Because of his many lead roles in the series, fans have dubbed him "Mr. Kamen Rider".
Kamen Rider 555: Paradise Lost
Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals
Kamen Rider Kiva: King of the Castle in the Demon World
Kamen Rider Kabuto: God Speed Love
Kamen Rider Ryuki Hyper Battle Video: Ryuki vs. Kamen Rider Agito
Kamen Rider Den-O & Kiva: Climax Deka
Kamen Rider Den-O The Movie: I’m Born!
Lady Battle Cop
Farewell Kamen Rider Den-O: Final Countdown
Super Kamen Rider Den-O & Decade NEO Generations: The Onigashima Warship
Kamen Rider ZO
Kamen Rider x Kamen Rider Fourze & OOO Movie Wars Mega Max
Seijuu Sentai Gingaman vs Megaranger
Super Kamen Rider Den-O Trilogy - Episode Blue: The Dispatched Imagin is Newtral
Super Kamen Rider Den-O Trilogy - Episode Red: Zero's Star Twinkle
Super Kamen Rider Den-O Trilogy - Episode Yellow: Treasure de End Pirates
Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai
Tokusou Robo Janperson the Movie: Mother is Eternal! The Electric Brain’s Love and Passion on the Operating Table
Kamen Rider Ghost RE:BIRTH - Kamen Rider Specter
Kamen Rider Decade: All Riders Super Spin-off
Ninja Sentai Kakuranger
Gosei Sentai Dairanger
Mahou Sentai Magiranger
Kamen Rider
Seijuu Sentai Gingaman
Special Investigation Robo Janperson
Juukou B-Fighter
B-Fighter Kabuto
Special Rescue Exceedraft
Absolute Zero
Hikonin Sentai Akibaranger
Gourmet Detective Goro Akechi
Kamen Rider Zero-One
Kamen Rider Blade
Kamen Rider Decade
Kamen Rider Ryuki
