Debut:
September 14, 2015
Korean: 희현
Japanese: ヒヒョン
Namwon, North Jeolla
CountrySouth Korea
Do it amazing DIA! Hello, I'm Huihyeon! Ki Hui-hyun (기희현) better known by the mononym Huihyeon and former stage name Cathy, is a South Korean singer. She is best known as a member of South Korean girl group DIA. She was a competitor in Produce 101.