Kim Dae Sung, formerly known as ACE, is a South Korean rapper, actor and former member of MASC and of the underground rap crew Rassay Sunz. He debuted as an actor in 2014 with a role in the SBS drama "One Warm Word Behind" and debuted as a singer as part of the original four-member group along with Woosoo, 26, and Hee Jae under JJ Holic Entertainment on August 19, 2016 with the EP "Strange". New members were introduced in 2017 with the release of the 3rd single, "Do It". However, he became involved in a major controversy when he physically assaulted fellow member Chibin who months later posted the images on social media detailing the incident. Both were interviewed separately and the prosecutors acknowledged the unilateral assault against Chibin. He apologized but the agency decided that both members should leave the group. At the end of the month, he took full responsibility for his actions, left MASC and ended his contract with the company. Despite rumors of a possible return to acting, he seems to be completely out of the entertainment industry now. (Source: KProfiles & Wikipedia)

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