Dan Erickson Creator, Executive Producer, Writer Adam Scott Mark Actor Britt Lower Helly Actor Patricia Arquette Harmony Cobel Actor Zach Cherry Dylan Actor Tramell Tillman Milchick Actor John Turturro Irving Actor Jen Tullock Devon Actor Christopher Walken Burt Actor Dichen Lachman Ms. Casey Actor Yul Vazquez Petey Actor Chris Black Executive Producer Ben Stiller Executive Producer, Director Nicky Weinstock Executive Producer Jackie Cohn Executive Producer Mark Friedman Executive Producer Andrew Colville Executive Producer