(Portrayed by Jonathan Whittaker).

The Vulcan Expeditionary Group Director in the mid-23rd century, he gave Sarek a choice following Michael Burnham's graduation from the Vulcan Science Academy: either Burnham or Sarek's son, Spock, could be appointed to the Vulcan Expeditionary Group.

Location where Sarek was lost while on a diplomatic mission during the Klingon-Federation War. 

Luke Humphrey is the actor who portrayed V'Latak, the Vulcan logic extremist who tried to assassinate Ambassador Sarek (James Frain), in the Star Trek: Discovery episode, "Lethe." His prior television and film credits include Cruel But Necessary, Saving Hope, Murdoch Mysteries, Motive, Trench 11 and Frankie Drake. 

Ash Tyler's mother was enroute to the moons of Glazer when she was killed by a rogue comet.

Veteran actor Jonathan Whittaker played the Vulcan Director in the Star Trek: Discovery episode, "Lethe." One of Whittaker's earliest credits was 3 Men and a Baby, directed by Leonard Nimoy, and he counts among his subsequent film and television work Kung Fu: The Legend Continues, The X-Files, The Virgin Suicides, Gene Roddenberry's Earth: Final Conflict, Land of the Dead, Saving Hope and The Expanse. He has also appeared in such stage productions as Arcadia, Les Miserables, Dirty Dancing and Man of La Mancha.

Michael Burnham and her mother, Amanda Grayson, visited on Burnham's tenth birthday to attend a book exchange.

While on a mission, Lorca unexpectedly finds himself in the company of prisoner of war, Starfleet Lieutenant Ash Tyler and notorious intergalactic criminal, Harry Mudd. Burnham voices her concerns about the repercussions of the spore drive jumps on "Ripper".

(Portrayed by Shazad Latif)

A Starfleet Officer in the federation and prisoner-of-war, Tyler has seen the dark side of Starfleet's battle with the Klingons.

Starfleet admiral during the Klingon-Federation War.

Captain of the U.S.S. Yeager during the Battle of the Binary Stars.

Simon Northwood is a veteran stuntman and actor who played the Shuttle Pilot in the Star Trek: Discovery episode, “Choose Your Pain.” Born in England and raised there and the U.S. and Canada, he counts among his many credits, Mutant X, The Dresden Files, Diary of the Dead, Lost Girl, Hannibal, The Strain, Reign, Orphan Black, The Handmaid’s Tale, Designated Survivor and X-Men: Dark Phoenix. 

A species made up of exotic material found not only in normal space, but in a discreet subspace domain known as the mycelial network

A Federation starbase close to the Mempa Sector in the Beta Quadrant near where the U.S.S. Discovery crew believed Captain Lorca was being held by the Klingons.

It was seen in The Next Generation's "The Best of Both Worlds," where the final distress call from the transport ship Lalo was received before being destroyed by the Borg.

Patrick Kwok-Choon is the actor who portrays Rhys in Star Trek: Discovery. Kwok-Choon, who splits his time between Toronto and Los Angeles, is a classically trained actor and also proficient at Tae Kwon-Do, Muay Thai, Boxing and Krav Maga. His other acting credits include Covert Affairs, Nikita, Open Heart, Ransom, Wynonna Earp and Dark Matter.

A town on the planet Earth, Jefferson was the location of a classified Starfleet facilty tasked with building organic-propulsion units based on the U.S.S. Discovery's specifications during the mid-23rd century.

A mid-23rd century Federation starship captained by Gabriel Lorca prior to his assignment on the U.S.S. Discovery. The ship was destroyed by Lorca after it was ambushed during the Klingon-Federation War.

(Portrayed by Simon Northwood).

Killed by Klingons while transporting Captain Lorca back to the U.S.S. Discovery.

Veteran actor Conrad Coates portrays the Vulcan character, Admiral Terral, in Star Trek: Discovery. Coates has appeared in more than 100 television shows and movies dating back to the late 1980s, including War of the Worlds, TekWar, La Femme Nikita, Saw II, Smallville, The Dresden Files, Fringe, TRON: Legacy, This Means War, Defiance, X-Men: Apocalypse, Dark Matter, Designated Survivor and Anon.

A Federation facility named after the legenday Richard Daystrom, inventor of the Duotronic computer system.

Tyler Evan Webb played Shuttle Klingon 1 in the Star Trek: Discovery episode, “Choose Your Pain.” His other credits include The Rocky Horror Picture Show: Let's Do the Time Warp Again, Country Rush and The Strain.