Birth Name: Kim Hyung Soo
Stage Name: K.Will
Nickname: Brain HyungKnight
Birthday: December 20, 1981
Blood Type: O
Instruments: Piano
Twitter:
-He is from Gwangju, South Korea

Songs
2007: "Left Heart"
2008: "Love 119"
2009: "Dropping The Tears", "1 Drop Per Second", "Miss, Miss, And Miss"
2011: "My Heart Beating"
2012: "I Need You", "Please Don't"
2013: "Love Blossom", "You Don't Know Love"
2014: "Day 1"
2015: "Growing"