You might know him as Eminem, Marshall Mathers, or Slim Shady, but those are only just a few of the rapper's many personas. Eminem, as he is best known, has been in the rap game for almost 20 years, and in that time, he's accomplished a lot. He has sold millions of albums, broken countless records, made movies, retired, un-retired, and offended just about everyone at some point. This isn't an easy feat for any one person to accomplish. Luckily, Eminem has had lots of help from all of his alter egos.