Describe Shelly Levene from the novel, Glengarry, Glen Ross.

Shelly Levene was once a prolific salesman of the Chicago area. By his estimation, he pulled in hundreds of thousands of dollars for Mitch and Murray. Now in his fifties, Shelly has hit a losing streak, failing to close a sale in months. He is the bottom rung of the sales ladder, now, and looking at his possible termination.