"Every single member is so precious to me and like family to me.. I may joke around with them a lot but I can’t talk seriously with them..because it’s awkward for me. But on the inside, I really do think of each one of you so much and I want you all to know that." —Hyoyeon Kim Hyo-yeon (born September 22, 1989), better known simply as Hyoyeon, is a South Korean singer, dancer and actress. She is a member of the K-pop girl group, Girls' Generation, as a supporting vocalist and the lead dancer. Hyoyeon was a trainee under SM Entertainment for six years and one month from 2000 til 2007.