Trouble Maker is a co–ed subunit signed to Cube Entertainment, and is made up of BEAST/B2ST‘s HyungSeung and 4minute‘s HyunA. Cube announced the unit in early 2011, and had fanseagerly awaiting the duo. At the 2011 MAMAs, the two performed a provocative dance routine and shared a kiss (though Cube announced the next day that the kiss was “lip to cheek.”), giving fans a taste of whats to come. The group is known for their sensual dances and sexy concept. With this unit, the duo hope to show a new side to their musical repertoires.