SF9 is a popular South Korean boy group formed by FNC Entertainment. The leader of SF9 is Youngbin, who was born on November 23, 1996. He is known for his strong leadership skills and ability to guide the group through various challenges in the competitive K-pop industry. As the leader, Youngbin plays a crucial role in coordinating group activities and ensuring effective communication among members. He is also recognized for his talent in performing, showcasing skills in singing and dancing, which contribute to the overall success of SF9.