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
Kamen Rider 555 20th: Paradise Regained (2024)
as Ramen Shop Regular Customer
Shogun's Ninja (2025)
as Munenori Yagyu
Agito: Superpower War (2026)
as Police Chief
Kamen Rider Kabuto 20th: The One Who Inherits the Heavens (2026)
Actor
Kamen Rider Ryuki Hyper Battle Video: Ryuki vs. Kamen Rider Agito (2002)
as Kamen Rider Agito (voice)
Kamen Rider Ghost RE:BIRTH - Kamen Rider Specter (2017)
as Gyro
Tatsujin Warriors (2025)
Actor
Heisei Rider vs. Showa Rider: Kamen Rider Wars feat. Super Sentai (2014)
as Worker
Kamen Rider Kiva: King of the Castle in the Demon World (2008)
as Policeman
What If My Girlfriend Was a Yokai Hunter... （That's a Wrap) (2024)
as Hisane Katsuragi
What If My Girlfriend Was a Yokai Hunter... （Second Helping) (2023)
as Hisane Katsuragi
Ninja Sentai Kakuranger: Act Three - Middle-Aged Struggles (2024)
as Jagoemon
The Living Dragon (2026)
Actor
Lady Battle Cop (1990)
Actor
Kamen Rider Agito Special: A New Transformation (2001)
as Kamen Rider Agito (Suit Actor)
Good Morning, Sleeping Lion 2 (2024)
as Kazuma Kujo
Kamen Rider Revice the Movie Spin-Off: Birth of Chimera (2022)
as Akinari Otani
Momotaros' Summer Vacation (2007)
as Momotaros (suit actor)
Kamen Rider Decade: All Riders Super Spin-off (2009)
as Himself
Good Morning, Sleeping Lion (2022)
as Kazuma Kujo
Kamen Rider Ghost: Final Stage (2017)
as Gyro
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
HE -LOW THE FINAL (2022)
Actor