Jon Cryer Alan Harper Actor Ashton Kutcher Walden Schmidt Actor Conchata Ferrell Berta Actor Aisha Tyler Allison Guest Star Angela Lin Laura Guest Star Kris Iyer Dr. Prajneep Guest Star Malea Rose Stacy Guest Star Rachele Brooke Smith Tracy Guest Star Max Mittelman Mechanical Demon Guest Voice Chuck Lorre Executive Producer, Writer Don Reo Executive Producer, Writer Jim Patterson Executive Producer, Writer Lee Aronsohn Writer Warren Bell Writer Steve Tompkins Writer James Widdoes Director