Ryuhei Maruyama is a Japanese entertainer who has also taken on work as an anime voice actor. He is primarily known as a singer, actor, and radio host, as well as a member of the popular Japanese idol group Super Eight, formerly known as Kanjani Eight.

In the realm of acting, Maruyama portrayed the character Meisuke Nueno, also known as Nube, in the 2014 live-action television drama adaptation of Jigoku Sensei Nube. This role was a lead part in the ten-episode Nippon TV series, which is based on the popular supernatural manga of the same name. It is important to note that this performance was in a live-action drama and not a voice acting role in the anime adaptations of Jigoku Sensei Nube.

Maruyama entered the field of anime voice acting with his role as Rurowa in the prequel anime film AS ONE. Released in Japan in August 2025, AS ONE is a film that serves as a prequel to the Starwing Paradox arcade game. He was announced as part of the cast in June 2025, and interviews at the time referred to this as his first voice acting role.