Birth Name: Lee Seong Yeol
Stage Name: Sungyeol
Nicknames: Choding, Kindergarten Boy
Birthday: August 27, 1991
Position: Vocalist
Height: 183 cm
Blood Type: B
Twitter: @Seongyeol1991
-He shares a room with Woohyun and Sunggyu
-When asked to choose between 4Minute's Hyuna and f(x)'s Krystal, he chose Krystal