Daymond John is an American entrepreneur, author, and television personality best known as the founder of the clothing brand FUBU. He started the company in the early 1990s, which became popular for its urban fashion and played a significant role in the hip-hop culture. In addition to his business success, Daymond is a prominent investor on the reality TV show Shark Tank, where he evaluates and invests in startup companies. He has also written several books on entrepreneurship and personal branding, sharing his insights and experiences to inspire others in their business ventures.