B ang Si-hyuk, also known by his stage name "Hitman" Bang, is a South Korean music producer, songwriter, and entertainment executive who is the founder of HYBE Corporation (formerly Big Hit Entertainment). He is best known as the creative mastermind behind the global K-pop phenomenon, BTS. A composer by training, Bang started his career at JYP Entertainment before founding his own agency in 2005.

For years, Big Hit was a small and struggling agency in an industry dominated by a few large companies. Everything changed with the debut of the seven-member boy band BTS in 2013. Bang's unique approach to artist management, which emphasized authentic storytelling, social media engagement, and a deep connection with fans (known as the ARMY), propelled BTS to unprecedented global superstardom. This success transformed HYBE into a multi-billion dollar entertainment powerhouse. The company's blockbuster IPO in 2020 made Bang Si-hyuk the first self-made billionaire in the South Korean entertainment industry.