Birth Name: Lee Sung Jong
Stage Name: Sungjong
Nicknames: Maknae, Maknae-nim, Diva, Beautiful Man
Birthday: September 3, 1993
Position: Vocalist and Maknae
Height: 179 cm
Blood Type: A
Twitter: @infiniteyounges
-He shares a room with Hoya
-When asked to choose between 4Minute's Hyuna and f(x)'s Krystal, he chose Hyuna