Bang Chan is the leader of the group, but also Producer, Vocalist, Dancer, Rapper. Members ofter called him Kangaroo.

Born in South Kore he moved to Sydney in Australia at a young age. He has a younger sister and a younger brother. He has a dog named Berry. He went to Cheongdam High School. He used to take ballet and modern dance classes. He trained for 7 years.

He is part of pre-debut group/sub-unit 3RACHA with Changbin and Jisung. His stage name in 3RACHA is CB97. He does the music editing, and matches the choreography, so he often doesn't have time.