The Grapes of Wrath tells the story of Joad family's search for a new life in California after being evicted from their farm in Oklahoma. The family includes three generations (four if you include Rose of Sharon's unborn child) as well as seven siblings. In addtion, the novel also includes other characters connected to the family such as Jim Casy and Muley Graves. Furthermore, there are a whole host of characters that we meet on their journey, such as Ivy and Sairy Wilson, and some who we don't even know their names such as the truckdriver that Tom hitches a ride with, the one-eyed man who sells Al and Tom car parts or the ragged man they meet at a campsite who is going back to Oklahoma to starve.
Do some of these characters represent a main theme or idea? Do they represent "roads not taken" by the main characters or contrasts with the Joad family? Do they all (or most) have something in common? Do they fit into categories or types? Why this sprawling cast of characters?