김종국
Kim Jong-kook had a setback after Turbo as he faced difficulties settling down as a solo artist. Problems like lack of songs from composers, less support from his respected agency, and also a change of taste within the fans caused his first album as a solo artist to fail. However, he made a successful comeback with his second album "Evolution" in 2004, which spawned the hit single "One Man". Kim then became a permanent cast member of the popular variety game show, "X-Man", which further raised his popularity.