Guest Stars Tig Notaro as Commander Jett Reno James Frain as Ambassador Sarek Mia Kirshner as Amanda Grayson 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 Hannah Cheesman as Lieutenant Commander Airiam David Benjamin Tomlinson as Lt. J.G. Linus Raven Dauda as Dr. Tracy Pollard Rachael Ancheril as Commander Nhan Ethan Peck voices Spock Arista Arhin as Young Michael Burnham Liam Hughes as Young Spock Sean Connolly Affleck as Lieutenant Evan Connolly