(Portrayed by Raven Dauda).

The U.S.S. Discovery Medical Officer that attempted to treat Ash Tyler after he was revealed to be Voq.

Location where mirror Burnham's shuttle was thought to be destroyed by loyalists to Captain Lorca.

Burnham heads to the I.S.S. Charon with a special "gift" for the Emperor. With the help of an unexpected source, Stamets gains clarity while trapped inside the mycelial network. And Saru asks for L’Rell’s help.

Toronto-based actress Raven Dauda played Dr. Pollard in “Vaulting Ambition,” a first-season episode of Star Trek: Discovery. On her Twitter page, Dauda describes herself as a “Spiritual alien masking as a human being who's learning how to love, act, write, design, teach and listen... in order to take over the world! Muah haa haa!” A veteran of film, television, stage and voiceover work, her credits span from Murder at 1600, Soul Food, Resident Evil: Outbreak and Nikita to Heroes Reborn, Mary Kills People, Designated Survivor, Salvation and Falling Water.

(Portrayed by Marie Ward).

Guard on the I.S.S. Charon.

A cadet on the I.S.S. Buran that was the sister of the Senior Guard of the I.S.S. Charon and Captain Lorca's former lover.

Marie Ward is the Canadian actress who played the Junior Guard in the first-season Star Trek: Discovery episode, “Vaulting Ambition.” Ward’s many other film and television credits include Due South, Threshold, Mutant X, Honey, Suits, Lost Girl, Ransom and Zombies.

(Portrayed by Jeremy Crittenden).

A member of the Emperor's inner circle, Lord Eling's life was spared following Michael Burnham's revelation that she is from another universe.

Technology used by the rebels to hide their secret base on the planet Harlak from the Terran Empire.

Sean Cochran is the Star Trek: Discovery staff writer who penned the teleplay for the first-season episode, “Despite Yourself.” Cochran began his career as a production assistant, assistant to the executive producer and production staff on such series as Lipstick Jungle, Mercy, Off the Map, GCB and Revenge.

(Portrayed by Harry Judge).

A Starfleet admiral that boarded the U.S.S. Discovery upon its return from the mirror universe.

Mirror Universe

A Tellarite member of Fire Wolf's inner circle that met with Michael Burnham and Lt. Tyler on the planet Harlak.

As the crew continues their guise, Burnham goes a merciless mission in hopes of helping the U.S.S. Discovery return home. Tilly works on restoring Stamets’ neurofunction.

Dwain Murphy is an actor-producer-director who guest starred as Captain Maddox of the Imperial Flagship in the Star Trek: Discovery episode, “The Wolf Inside.” Murphy was born on the small Caribbean island of Dominica, moving to Canada with his parents at the age of four, and studied his craft at the Humber College Acting for Film and Television. He has appeared in such shows and films as How She Move, DeGrassi: The Next Generation, Ghost Whisperer, Saving Hope, Rogue, The Masked Saint, The Strain, The Mist and Mohawk Girls.

Harry Judge plays Admiral Gorch, a Tellarite, on Star Trek: Discovery. He so far has appeared in the episodes "The Wolf Inside" and "The War Without, The War Within." The Canadian actor's previous film and television credits include The Truth Below, Saving Hope, Lost Girl, Manhattan Undying, Suits and Murdoch Mysteries.

(Portrayed by Dwain Murphy).

Captain of the Imperial Flagship, I.S.S. Charon.

Lisa Randolph is a co-executive producer of Star Trek: Discovery and wrote the first-season episode, “The Wolf Inside.” Randolph started her career as the assistant to producer Tom Fontana, working with him on Oz and Homicide: Life on the Street, among other shows, before rising through the Hollywood ranks as a script coordinator and story editor on such shows as Desperate Housewives, The Shield, Dollhouse and Being Human. More recently, she’s served as a writer-producer on Rush and Reign.

The location of a secret rebel base which was to be destroyed by Michael Burnham on orders from the Terran Emperor. Burnham beamed down to the base with Lt. Tyler in an effort to learn about the unique alliance between the Klingons, Andorians, Vulcans and Tellarites.

The planet was later destroyed by the I.S.S. Charon. 

(Portrayed by Riley Gilchrist).

Starfleet admiral that boards the U.S.S. Discovery upon its return from the mirror universe.

Mirror Universe

Andorian rebel leader in the mirror universe.

Riley Gilchrist played Shukar, a male Andorian, in Star Trek: Discovery. The actor’s many previous film and television credits include The Smartest Woman Survival Guide, Warehouse 13, DeGrassi: The Next Generation, Embryonic, Reign, Good Witch and Suits. 

While in unfamiliar territory, the crew must get creative to survive against opposing forces and return home.