Ryan Daniel Montgomery, better known by his stage name Royce da 5'9", is an American rapper from Detroit, Michigan. He is best known for his longtime association with Eminem as well as his solo career, recording primarily with Carlos "6 July" Broady and DJ Premier, as well as ghostwriting for the likes of Diddy and Dr. Dre. Royce is one half of the rap duo Bad Meets Evil with Eminem and also a member of hip hop group Slaughterhouse. The editors of About.com ranked him No. 30 on their list of the Top 50 MCs of Our Time.