|This article is about a/an actor in the Kamen Rider Series.|
Akaso was briefly a member of the male music group BOYS AND MEN, a group that former Gaim-star Yutaka Kobayashi is a prominent member of.
Akaso began his modeling career in his teens under the stage name Mamoru Akaso. In 2010, Akaso was a member of BOYS AND MEN, but left later on.
- Kamen Rider Amazons (Season 2; 2017) - Hiroki Nagase
- Kamen Rider Build (2017) - Ryuga Banjo
- Kamen Rider Zi-O (2018) - Ryuga Banjo (guest starring)
- Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders (2017) - Ryuga Banjo
- Kamen Rider Build: Be The One (2018) - Ryuga Banjo
- Kamen Rider Build: Birth! KumaTelevi!! VS Kamen Rider Grease! (2018) - Ryuga Banjo
- In a Kamen Rider Build press conference, he said that his favorite rider is Kamen Rider Kuuga and his grandfather bought him a Kuuga transformation belt on his birthday.
- With his guest appearance in Kamen Rider Zi-O, he is the first Rider actor to have been in three consecutive Heisei productions in a row, with his first appearance in the franchise as Hiroki Nagase in Season 2 of Kamen Rider Amazons in April of 2017. After the finale of Amazons, he was cast in Kamen Rider Build as as Ryuga Banjou, where the show aired from September 2017 to the end of August of 2018. He would later reprise his role as Ryuga in Zi-O.
- Akaso has bought Figuarts of Cross-Z and Cross-Z Charge.
- Eiji Akaso's Official Instagram