Fargo's fourth season just added a very unexpected cast member: funnyman Chris Rock. On Friday, FX announced that the 53-year-old comic will portray "the head of one family, a man who -- in order to prosper -- has surrendered his oldest boy to his enemy, and who must in turn raise his son’s enemy as his own," according to ET. Rock added in a statement, "I’m a fan of Fargo and I can’t wait to work with [creator] Noah Hawley." The anthology's fourth season will be set in 1950 and is expected to focus on "immigration and assimilation." It will debut sometime in 2019.