MIcheal Blanton and Brown Bannister

According to the director commentary,Justin is a composite character that represents the many traveling companions Rich had over the years(i.e. Becker and Mitch McVicker). I guess the Bryan and Matt characters could represent the many record executives Rich dealt with. It would make sense from a production/finanacial point of view to have 2 composite characters. Also it would help to reduce confusion during the narrative of the story.