Who is Shelley in the novel, Early Autumn?

Shelley is one of Harry Cotton's minions. When Shelley hears Cotton having words with Spenser, he comes to the door of Cotton's office and Spenser wonders if Shelley can actually fit through. Shelley is ordered to throw Spenser out of Cotton's office and makes a step in that direction until Spenser pulls a gun on him. Shelley is reportedly the man who shoots at Spenser when he is with Susan and Paul, and Spenser beats him unconscious for putting Susan and Paul in harm's way.