Stage Name:  Damien

Age:  26 years old (November 18, 1989)

Trivia:  He is half-American and was an underground rapper before debuting as the leader of Marvel.  He helped compose 1RIS's debut single and will be mentoring the rappers of the group.

Stage Name:  Namsoon

Age:  21 years old (June 14, 1994)

Trivia:  He moved from London to Seoul to start training to be an idol at the age of 8.  He will be mentoring 1RIS in vocals and stage performance.

Stage Name:  Sangchul

Age:  25 years old (April 26, 1990)

Trivia:  He is part of a compser & lyricist duo with Damien and has taken part in writing and producing most of Marvel's songs, as well as 1RIS's debut single.  He is likely to continue helping write and produce the group's songs.

Stage Name:  J

Age:  22 years old (September 8, 1993)

Trivia:  He was a successful South Korean child actor and ulzzang before his debut in Marvel.  He will be mentoring 1RIS in acting, modeling, and other variety skills.

Stage Name:  Siwoo

Age:  23 years old (October 5, 1992)

Trivia:  He is the CEO's nephew and the second son of a retired South Korean actress.  He doesn't really want anything to do with 1RIS, but he has been asked to help mentor them in dancing.

Stage Name:  Byungho

Age:  19 years old (May 10, 1997)

Trivia:  He was set to debut in another DSE project group named X Factor, but it was disbanded due to internal conflict.  He will be mentoring the members of 1RIS in dancing.