Davis was born in Houlton, Maine, and raised in Bangor, Maine, by his single mother along with his brother, Ron who is six years older than Marcus. Davis was troubled growing up, often getting into fights. He w… See more

Davis entered professional MMA on August 22, 2003, with a first-round TKO of Shaun Gay. Though later describing himself as "one-dimensional", Davis was able to put together a 3–2 professional record.
In 2005, M… See more