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According to their label ChiKo Entertainment, Heeyu is "multitalented in all fields including singing and dancing, on top of her doll-like beauty." She was also previously seen on Mnet's 'Survival: Search for Momoland'. 

MIXX will be returning as a 5-member group with new members Heeyu and Mia, as well as their original members Hana, Ari, and Lia. Their new single, "Love Suddenly", is set for January 5!