He has been called the "Godfather of the Underground" for pioneering the resurgence of gritty, lyrical rap and use of drumless sample loops in the early 2010s with his highly influential debut album Marcberg (2010).

Marciano left in 2001 to form the U.N., a hardcore underground hip hop group consisting of three other MCs (Dino Brave, Laku & deceased member Mic Raw) with whom he released an album on Carson Daly's 456 Entertainment in 2004.

The mixtape served as preface to his third studio album, Marci Beaucoup, that was entirely produced by him and had featured artists such as Action Bronson, Evidence, Ka, Maffew Ragazino, Quelle Chris and more.

The album features guest appearances from Knowledge the Pirate and Action Bronson and production from E.L.E.M.N.T., Animoss, Don Cee, and Roc Marciano himself.

Each one shading his story a different hue, taking a step further in creating a full landscape while maintaining a two fisted approach to punch lines that would have made prized pugilist Rocky Marciano proud.