Special Guest Stars Michelle Yeoh as Emperor Philippa Georgiou Augustus Iaponius Centarius Guest Stars James Frain as Ambassador Sarek Ethan Peck as Spock Mia Kirshner as Amanda Grayson Alan van Sprang as Leland 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 Arista Arhin as Young Michael Burnham Liam Hughes as Young Spock