M.A.S.C! Hello, we are Masc! MASC (마스크) is a four-member boy group under J Planet Entertainment. They debuted on August 19, 2016, with the mini-album Strange. Their name is short for "masculine".
On July 30, JJ Holic announced the departures of ACE and Chibin after it was revealed earlier that an incident occurred back in March which ACE violently assault Chibin. ACE was removed from the group while Chibin, citing difficulties in continuing as a member due to recovering from the incident, would leave and pursue a career in acting.
During the ongoing news, 26 also announced his departure from MASC as he decided to pursue a new career as a director.
On October 22, their agency announced the group would come back as four, confirming the departure of Doeun as well.