Kim Sung Kyu is a South Korean singer-songwriter, musician, actor, and MC. He is the leader and the main vocalist of the South Korean boy band "Infinite".
Sung Kyu was in a school rock band called "Coma Beat." He was also the first member out of Infinite to release a solo album, titled Another Me.
In April 2013, Sung Kyu was a member of the tvN's reality program, "The Genius: Rules of the Game". On January 29, 2015, Sung Kyu was confirmed to star in new KBS variety show, Fluttering India.