Eddie Willers is generally assumed to represent the common man.
Eddie Willers appears in:
Section111 Section114 Section132 Section133 Section141 Section151 Section152
I found Eddie Willers' fate at the end of the book interesting - I almost wanted Eddie included with the Strikers in Galt's Gulch. Ok, he wasn't in the same caliber as John Galt & co. but he certainly fought against the Looters