Untouchable is a South Korean hip-hop group formed in 2008. The group consists of four members: Sleepy, Double K, Kid Milli, and Swings. They are known for their unique sound, which blends elements of hip-hop, R&B, and soul. Untouchable has released several successful albums and singles, including "Freestyle," "White Forces," and "G4 Baby." They have also collaborated with a number of other artists, including Jay Park, Dok2, and Beenzino.