We've known for a while now that "The Walking Dead's" Sonequa Martin-Green was due to join the crew of "Star Trek: Discovery," as the show's lead actor -- but now fans know what her character's name will be: First Officer Michael Burnham.

CBS had previously refused to comment on the actor's role, and only officially confirmed what it acknowledges has been "the worst-kept secret in the universe" on its startrek.com website after "The Walking Dead" Season 7 finale had aired.

RELATED: Rainn Wilson Boards "Star Trek: Discovery" As Harry Mudd

Despite her character's relatively low rank, Martin-Green is apparently set to be a “lieutenant commander with caveats.” Describing her role in the series, executive producer Bryan Fuller, who was originally down to serve as "Discovery's" showrunner, said, “We’ve seen six series from the captain’s point of view… To see a character from a [new] perspective on the starship — one who has different dynamic relationships with a captain, with subordinates, it gave us richer context.”

This seems to be the direction CBS is continuing to pursue, despite Fuller leaving the project to concentrate on Starz TV adaptation of Neil Gaiman's "American Gods."

Martin-Green joins a previously announced cast that includes Jason Isaacs as Captain Lorca, Michelle Yeoh as Captain Georgiou, Doug Jones as Science Officer Lt. Saru and Anthony Rapp as astromycologist Lt. Stamets. “Penny Dreadful” alum Shazad Latif will also play the prominent role of Klingon commanding officer Kol, with Chris Obi (“American Gods”) playing T’Kuvma, a Klingon leader who seeks to unite the Klingon houses. Mary Chieffo will portray L’Rell, the battle deck commander of the Klingon ship.

RELATED: "Star Trek: Discovery" Casts Its Captain

"Star Trek: Discovery" is currently expected to hit TV screens sometime in late summer/early fall 2017. It will be available via the CBS All Access steaming platform in the US, on Space in Canada and via Netflix in the rest of the world.