Marvin Eugene O'Neal, known professionally as Marv Won, was born on February 4, 1981, in Detroit, Michigan. He is an American rapper and record producer who began his career in the early 2000s. In 2001, O'Neal co-founded The Fat Killahz with Fatt Father, Bang Belushi, and King Gordy, performing at various venues in Detroit. The group released their debut mixtape, 2 Fat 2 Furious, in 2003 and opened for D12's US tour in 2004. In March 2005, they released their first studio album, Guess Who's Coming To Dinner? via No Tyze Entertainment. O'Neal also released solo projects, including The Way of the Won (2009) and Wayne Fontes Music (2010). In 2017, he dropped his fourth solo album, Soundtrack of Autumn, produced entirely by himself. Marv Won received a Detroit Music Award nomination for Outstanding Rap MC at the 30th Detroit Music Awards in 2021.