Guest Stars Tig Notaro as Commander Jett Reno Rachael Ancheril as Commander Nhan Mary Chieffo as L'Rell Ethan Peck as Spock Mia Kirshner as Amanda Grayson Kenneth Mitchell as Tenavik Co Starring Emily Coutts as Lt. Cmdr. Keyla Detmer Oyin Oladejo as Lt. Cmdr. Joann Owosekun Patrick Kwok-Choon as Lt. Cmdr. Gen Rhys Ronnie Rowe as Lt. Cmdr. Ronald Altman Bryce Julianne Grossman voices Discovery Computer Sara Mitich as Lt. Cmdr. Nilsson David Benjamin Tomlinson as Lt. J.G. Linus Ali Momen as Lieutenant Kamran Gant Ian James Corlett voices Section 31 Computer Byron Abalos as Trainee #1 Olivia Croft as Trainee #2