Billy Bob Thornton Lorne Malvo Actor Martin Freeman Lester Nygaard Actor Colin Hanks Gus Grimly Actor Allison Tolman Molly Solverson Actor Adam Goldberg Mr. Numbers Guest Star Russell Harvard Mr. Wrench Guest Star Shawn Doyle Vern Thurman Guest Star Bob Odenkirk Bill Oswalt Guest Star Kate Walsh Gina Hess Guest Star Keegan-Michael Key FBI Agent Pepper Guest Star Keith Carradine Lou Solverson Guest Star Jordan Peele FBI Agent Budge Guest Star Kelly Holden Bashar Pearl Nygaard Guest Star Oliver Platt Stavros Milos Guest Star Rachel Blanchard Kitty Nygaard Guest Star Joshua Close Chazz Nygaard Guest Star Allegra Fulton Helena Milos Guest Star Glenn Howerton Don Chumph Guest Star Joey King Greta Grimly Guest Star Susan Park Linda Park Guest Star Noah Hawley Executive Producer Warren Littlefield Executive Producer Joel Coen Executive Producer Ethan Coen Executive Producer J. Geyer Kosinski Executive Producer