"Do it amazing DIA! Hello, I'm Eunice!"
Eunice (유니스; formerly known as Sooyeon) is a South Korean singer under MBK Entertainment. She is a member of the girl group DIA and its sub-unit BCHCS. She is also a pre-debut member of the girl group Jewelry.
In 2014, she was added to the line-up of Star Empire Entertainment's girl group Jewelry, but unfortunately, she never had the chance to debut with them as the group disbanded shortly thereafter. Sometime later, she left the agency and signed with MBK Entertainment.
On September 14, 2015, she debuted as a member of the girl group DIA, under the stage name Eunice, with the release of their first studio album Do It Amazing.
On December 29, 2016, she debuted in DIA's first sub-unit, BCHCS.