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".
Filmography
Kamen Rider 555 20th: Paradise Regained
as Ramen Shop Regular Customer
Kamen Rider Ryuki Hyper Battle Video: Ryuki vs. Kamen Rider Agito
as Kamen Rider Agito (voice)
Good Morning, Sleeping Lion
as Kazuma Kujo
Shogun's Ninja
as Munenori Yagyu
Agito: Superpower War
as Police officer
Good Morning, Sleeping Lion 2
as Kazuma Kujo
Kamen Rider Revice the Movie Spin-Off: Birth of Chimera
as Akinari Otani
Momotaros' Summer Vacation
as Momotaros (suit actor)
Kamen Rider Ghost: Final Stage
as Gyro