Seiji Takaiwa
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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".
Known for
Credits
Shogun's Ninja (2025)
as Munenori Yagyu
Agito: Superpower War (2026)
as Police officer
Kamen Rider 555 20th: Paradise Regained (2024)
as Ramen Shop Regular Customer
Kamen Rider Kiva: King of the Castle in the Demon World (2008)
as Policeman
Kamen Rider Kabuto 20th: The One Who Inherits the Heavens (2026)
Actor
Tatsujin Warriors (2025)
Actor
Kamen Rider Revice the Movie Spin-Off: Birth of Chimera (2022)
as Akinari Otani
Kamen Rider Ryuki Hyper Battle Video: Ryuki vs. Kamen Rider Agito (2002)
as Kamen Rider Agito (voice)
The Living Dragon (2026)
Actor
Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai (2014)
as Worker
Kamen Rider Ghost RE:BIRTH - Kamen Rider Specter (2017)
as Gyro
Kamen Rider Agito Special: A New Transformation (2001)
as Kamen Rider Agito (Suit Actor)
Ninja Sentai Kakuranger Part 3: The Fights of Middle Age (2024)
as Jagoemon
Lady Battle Cop (1990)
Actor
Tokusou Robo Janperson the Movie: Mother is Eternal! The Electric Brain’s Love and Passion on the Operating Table (1993)
as Neo Guild Killer Robot
Momotaros' Summer Vacation (2007)
as Momotaros (suit actor)
Kamen Rider Ghost: Final Stage (2017)
as Gyro
Good Morning, Sleeping Lion 2 (2024)
as Kazuma Kujo
HE -LOW THE FINAL (2022)
Actor
Kamen Rider Decade: All Riders Super Spin-off (2009)
as Himself
Good Morning, Sleeping Lion (2022)
as Kazuma Kujo