BTOB (비투비, Born to Beat) is a seven-member South Korean boy group formed in 2012 by Cube Entertainment. The group consists of Eunkwang (leader), Minhyuk, Changsub, Hyunsik, Peniel, Ilhoon and Sungjae. The group originally consisted of Eunkwang, Minhyuk, Hyunsik, Ilhoon and Minwoo. They appeared on the JTBC sitcom "I Live in Cheongdam-dong" as an boy band working towards their debut. However, Minwoo left the group after their first appearance on the sitcom which had upset many fans.