That guy you just saw is Eminem's half-brother, Nate Kane Mathers, an aspiring performer. You can see them in old-school pictures together with their mom, Debbie, above and below.

There isn't a ton of information available on their relationship, but there are rumors that Eminem supposedly raised Nate for some time, as he's 12 years his senior. Nate is always showing his big bro love on Twitter, and Em even raps about his little bro on the song 'My Mom,' albeit disconcerting lyrics about their messed up younger years.

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Watch the Nate Kane 'Slide on Over' Video