Special Guest Stars Michelle Yeoh as Emperor Philippa Georgiou Augustus Iaponius Centarius Guest Stars Rachael Ancheril as Commander Nhan Jayne Brook as Admiral Katrina Cornwell Alan van Sprang as Leland Bahia Watson as May Ahearn 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 Hannah Cheesman as Lieutenant Commander Airiam