ViVi (Hangul: 비비) is the fifth revealed member of LOONA and a member of its first sub-unit, LOONA 1/3.
She was born as Wong Ka-Hei (Cantonese: 黃珈熙) on December 9, 1996 in Hong Kong, China.
She debuted on February 14, 2017 as a member and subsequently released her solo single album ViVi on April 17, 2017.
ViVi was born in Hong Kong in 1996 as the oldest of three siblings. She has a younger sister, born in 2000, and a younger brother, born in 2008. ViVi was inspired to pursue a career in Kpop after seeing music videos by BIGBANG and 2NE1. Starting around 2011, ViVi worked as a freelance model in Hong Kong under the name Viian Wong. She modeled for a variety of projects between 2011–2016, including a video tutorial for Blush Cosmetics, and as a PlayStation model at Asia Game Show 2012. ViVi also participated in a number of short YouTube skits, presumably with friends.