Marshall Bruce Mathers III (born October 17, 1972), better known by his stage name Eminem and by his alter ego Slim Shady, is an American rapper, record producer, songwriter, and actor. In addition to his solo career, Eminem is a member of the group D12, as well as one half of the hip hop duo Bad Meets Evil, alongside Royce da 5'9". He is widely considered the best rapper of all time and has had 10 albums on the billboards #1 spot.