Lee Chang-sub (Korean: 이창섭, English: Lee Chang-sub, Japanese: チャンソプ), born on February 26, 1991, made his official debut in 2012 as a member of the South Korean boy group BTOB. Initially serving as a Lead Vocalist, he is now one of the vocalists and a member of the subunits BTOB-BLUE and BTOB 4U.
