Star Trek: Discovery is set to premiere on CBS in May 2017, before moving to All Access. The first season will consist of 13 episodes
Sonequa Martin-Green as Rainsford:
The lieutenant commander of the USS Discovery, referred to as "Number One". The decision to not make the series protagonist a starship captain, like previous Star Trek series' did, was made "to see a character from a different perspective on the starship—one who has different dynamic relationships with a captain, with subordinates, it gave us richer context". The decision to call her Number One was made in honor of the character of the same name portrayed by Majel Barrett in the original Star Trek pilot "The Cage". The character was initially pitched to CBS as only being called Number One in the series
Doug Jones as Saru: A Science Officer serving as a lieutenant aboard the Discovery.
Anthony Rapp as Stamets: A Science Officer specializing in astromycology (the study of fungi in space
Michelle Yeoh as Georgiou: Captain of the USS Shenzhou.
Shazad Latif as Kol: Commanding Officer of the Klingons, and protege of T'Kuvma.
Chris Obi as T'Kuvma: A Klingon leader who is looking to unite the Klingon houses.
Mary Chieffo as L'Rell: Battle Deck Commander of the Klingon ship