The main characters in "The Grapes of Wrath" are Tom Joad, Ma Joad, Pa Joad, Jim Casey and Rose of Sharon. Grampa and Granma Joad also play important roles in the novel.
Tom Joad is the novel's main character. He is Ma and Pa Joad's favorite son, displaying a moral certainty throughout the novel that gives him strength to see his family through a series of crises. Ma Joad is the arbiter of arguments and the healer of the family. Pa Joad is a tenant farmer from Oklahoma who takes his entire family to California to seek a better life after eviction from the family farm.