[3][4] He was admitted into Hanlim Multi Art School in the Songpa District of Seoul and graduated on February 7, 2013.

Moon was revealed as a member of idol sextet B.A.P on January 17, 2012, where he served as a sub-vocalist and main dancer.

The members sought to nullify its contract with the company citing "unfair conditions and profit distribution".

[14] In August and December 2018, Yongguk and Zelo left the group and record label following the expiration of their contracts, respectively.

[18] Moon was cast for an encore show of the theater production The Lost Village; the performance took place on April 27, 2019.

[19] Set in Jeju Island amid the historical events of 1979, he played the young version of bar owner Donghyuk.

[20] Moon was a contestant on Maeil Broadcasting Network's survival reality show Signhere (2019), where participants auditioned to join Jay Park's record label AOMG.

Moon cites American musician Chris Brown as his role model, who influenced him to become a singer.