How much improvisation is there on the set of SYFY's Resident Alien? The short answer is a lot! Chatting with Jackie Jennings and Juan Cadavid (co-hosts of the official Resident Alien After Show), a pair of cast members Corey Reynolds (Sheriff Mike) and Elizabeth Bowen (Deputy Liv) praised showrunner Chris Sheridan for fostering a creative environment that encourages input from the actors.