Question: What is the stage name of the American rapper from Michigan, who was a member of Funky Cowboys, Good Sqwad, and most notably for a group in which half the members made a guest appearance on the debut solo album 'The People vs' by Trick-Trick?
Sentence (from "Proof (rapper)"): He was a close childhood friend of rapper Eminem, who lived on the same block, and was often a hype man at his concerts.
Relevant evidence: No