Rocker

I think it is important that you know a little bit about each of the four runners in the band.  The lead member of the group is Rocker.  His real name is Sheldon Sheperd.  Sheldon is the vocalist in the group and in the commercials, he is always leading the pack in front.  You will also notice that he carries a speaker along with him.  To get a full description of Rocker, check out this link.