Jo Dong-rim (Korean: 조동림; born March 25, 1985), better known by the stage name Mad Clown (Korean: 매드클라운), is a South Korean rapper, songwriter, and record producer. He debuted with the single "Luv Sickness" in 2008 and released his first extended play, Anything Goes, in 2011. He broke into the mainstream following the release of "Stupid in Love," his hit 2013 collaboration with Soyou of the girl group Sistar. He has since released the extended plays Ferocity (2014), Piece of Mine (2015), Love is a Dog From Hell (2017), and 0 (2020).