Kim So-hye

So-hye berperan sebagai sub vocalist di I.O.I. Pada pertunjukan Produce 101, So-hye mendapat suara terbanyak pada pertandingan menari dari kategorinya, "The full moon by Sunmi"
Initially training as an actress, So-hye made cameo appearances in SNL (Saturday Night Live) and made a guest appearance on Star Show 360 starring EXO. In June 2016, So-hye opened a coffee shop, Penguin's Café, located in Seocho District to provide a space where she and her own agency can connect with fans.