The U2 front man is BONO, a four-letter name. BONO is an Irish singer, songwriter, musician, and activist. He is the lead vocalist of the rock band U2, which he co-founded in 1976. BONO has been a major figure in popular music for over four decades and is renowned for his expressive singing style, powerful stage presence, and social activism. He is also known for his philanthropic work, especially with regard to the alleviation of poverty and the fight against AIDS.