Guest Stars Danny Hoch as Subject 5 Kathleen Choe as Subject 3 Stephen Hill as Subject 7 Allyce Beasley as Subject 11 Billy Magnussen as Jed Milgrim Rome Kanda as Dr. Robert Muramoto Grace Van Patten as Olivia Meadows Hank Azaria voices Hank Landsberg Ariel Kavoussi as Female Neverdie David Fierro as Bobby Josh Pais as Butler Co Starring Sejal Shah as Medical Tech Dai Ishiguro as Head Control Tech Nate Craig as Phil Milgrim Alexandra Curran as Holly Milgrim Cailin Loesch as McMurphy Twin Hannah Loesch as McMurphy Twin Jacqueline Grabois as Jackie Glenn Wein as Male Neverdie Lindsey Blanchard as Little Ellie Lily Grace Riddle as Little Annie