B1A4 (Korean: 비원에이포) is a South Korean quintet boy band. Formed by WM Entertainment in 2011, they made their debut with their release Let's Fly. The band consists of Jinyoung, Baro, Sandeul, CNU and Gongchan. The group was first introduced through an online comic series, or "webtoon". The group has released 2 mini albums (EPs) and various singles. The group also made the foray in Japan in December and is also planning for a formal debut this January.