Guest Stars Tig Notaro as Commander Jett Reno Rachael Ancheril as Commander Nhan Bahia Watson as May Ahearn Rebecca Romijn as Number One Co Starring Emily Coutts as Lt. Cmdr. Keyla Detmer Patrick Kwok-Choon as Lt. Cmdr. Gen Rhys Oyin Oladejo as Lt. Cmdr. Joann Owosekun Ronnie Rowe as Lt. Cmdr. Ronald Altman Bryce Julianne Grossman voices Discovery Computer David Benjamin Tomlinson as Lt. J.G. Linus Hannah Cheesman as Lieutenant Commander Airiam Raven Dauda as Dr. Tracy Pollard