William Jackson Harper as Bryan Jacobsen and Bryan bot Kevin Michael Richardson Ana Gasteyer Gary Cole Darius Johnson Lauren Lapkus Kate Micucci as Charlie Drew Tarver James Adomian Nicole Sullivan Zachary Quinto Henry Winkler as Melvin; an actor who was hired to play Buzz Aldrin while the real Buzz resides on the moon. Debra Wilson Max Mittelman Fred Tatasciore