Special Guest Stars Michelle Yeoh as Emperor Philippa Georgiou Augustus Iaponius Centarius Guest Stars Tig Notaro as Commander Jett Reno Rachael Ancheril as Commander Nhan Jayne Brook as Admiral Katrina Cornwell Ethan Peck as Spock James Frain as Ambassador Sarek Mia Kirshner as Amanda Grayson Alan van Sprang as Leland Sonja Sohn as Gabrielle Burnham Rebecca Romijn as Number One Yadira Guevara-Prip as Me Hani Ika Hali Ka Po 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 Hanneke Talbot as Lieutenant Mann Samora Smallwood as Lieutenant Amin Chai Valladares as Lieutenant Nicola Nicole Dickinson as Yeoman Colt