The vegetative part of a fungus.

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Canadian actor Christopher Russell portrays Milton Richter in Star Trek: Discovery. His many film and television credits over the past two decades span from Kevin Hill, Land of the Dead, Supernatural and Flashpoint to Girlfriends' Guide to Divorce, iZombie, Reign and Dirk Gently's Holistic Detective Agency

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Conrad Pla is the actor who played Stone in the Star Trek: Discovery episode "Context Is for Kings." Born in Spain and raised in Canada, Pla counts among his dozens of credits such shows and features as Dead Awake, The Sum of All Fears, Mutant X, The Terminal, ReGenesis, Casino Jack, Immortals, Riddick, Rogue, Quantico, The Expanse and Taken.

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Anthony Rapp, Lt. Paul Stamets on Star Trek: Discovery, was born in Chicago and raised in Joliet, Illinois. An acclaimed actor and singer, he is most recognized for playing Mark Cohen in the off-Broadway and Broadway productions of the musical Rent, as well as in the film adaptation.

His other stage work includes You’re a Good Man, Charlie Brown, Little Shop of Horrors and If/Then, and among his film and television credits are School Ties, Twister, A Beautiful Mind, The Lazarus Man, The X-Files, Law & Order: Special Victims Unit and The Knick. Rapp also, in 2000, released an album titled Look Around. 

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A multi-legged micro-animal that lives in the waters of Earth and is capable of surviving extreme heat and sub-freezing temperatures. 

In the mid-23rd century, Michael Burnham discovered a macro-size version of the species that is sensitive to light and attracted to mushroom spores.

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An organism that feeds on electricity. In the mid-23rd century, a shuttle carrying Michael Burnham and three other prisoners was disabled when GS54 begins feeding on the shuttle's power system. 

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Sweeny is a writer and consulting producer on Star Trek: Discovery. His previous credits include The 4400, Medium, Common Law, Elementary and Limitless.

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Oyin Oladejo, who appeared as Lieutenant Junior Grade Joann Owosekun in the Star Trek: Discovery episode "Context Is for Kings," is a Toronto-based actress who hails from Nigeria. After graduating from Humber College`s Theatre Performance Program, Oladejo has amassed such in plays, films and shows as In This World, A Doll's House, TomorrowLove and Pond.

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Rekha Sharma, who hails from Vancouver, British Columbia, Canada, co-stars on Star Trek: Discovery as Commander Ellen Landry, the Discovery’s security officer. Sharma is perhaps most recognized for her roles as Tory Foster on Battlestar Galactica and Dr. Lorelei Tsing on The 100. Among her other film and television credits are The Outer Limits, The Core, Smallville, Aliens vs. Predator: Requiem and CSI: Crime Scene Investigation.

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(Portrayed by Anthony Rapp)

Lt. Commander Paul Stamets is the U.S.S. Discovery’s science officer and chief engineer, and was the partner of the late Dr. Hugh Culber. Brilliant, awkward, outspoken and not keen to make friends, his expertise is astromycology, meaning he knows more than anyone about space mushrooms and the vegetative part of a fungus called mycelium. Stamets collaborated with Lt. Straal, conducting research to "get to the living heart of the universe, the veins and muscles that hold our galaxies together." However, the Federation co-opted their research at the start of the Klingon-Federation War in order to develop an organic-propulsion system. Stamets was assigned to the Discovery, while Staal was assigned to the U.S.S. Glenn in order to expedite their research. 

Captain Lorca of the Discovery saw in their research the possibility of jumping through space at unimaginable speeds. Though he professed to pushing Stamets and Staal so hard in order to defeat the Klingons, his ulterior motive was to return to the Terran Universe and overthrow Emperor Georgiou. Staal, believing he’d made progress, tested the drive, but died along with everyone else on the Glenn. Stamets forged on, impatiently working with Cadet Tilly. Eventually, they harnessed the spore drive, with Stamets plugging into it as an organic navigator. The drive worked, and Lorca took advantage of it, giving the Klingons a run for their money and getting closer to home.

However, the jumps took their toll on Stamets, leaving him catatonic, but functioning within the mycelial network. When the Discovery crossed into the Mirror Universe, Stamets and Mirror Stamets came face to face, and Stamets was able to say goodbye to Dr. Culber, who'd been killed by Ash Tyler. Tilly soon revived Stamets, who then helped destroy the I.S.S. Charon and guide the Discovery back to the Prime Universe. 

For his efforts, Stamets received the Starfleet Medal of Honor and a promotion to Lt. Commander. He also accepted the Starfleet Medal of Honor on Dr. Culber’s behalf.

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Glenn NCC-1030, U.S.S.

The U.S.S. Glenn NCC-1030 was a Federation Crossfield class starship in the mid-23rd century that was researching a new, experimental organic-propulsion system along with the U.S.S. Discovery. An unexpected incident occurred during black alert manuevers testing the new propulsion system resulting in the death of the entire crew. 

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Laryngotracheal Stenosis

An abnormal narrowing of the central air passageways that can cause chronic snoring and a dry throat. Sylvia Tilly was born with the condition.

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Sara Mitich plays Lt. Commander Airiam, a synthetic-human hybrid aboard the U.S.S. Discovery, on Star Trek: Discovery. Originally from Hamilton, Ontario, Mitich's previous television and film credits include The Listener, Joy Ride 3: Road Kill, Heroes Reborn, Murdoch Mysteries, The Expanse, White Night and Anon.

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Elias Toufexis played Cold in the Star Trek: Discovery episode "Context Is for Kings." The Canadian actor has performed on stage, in films and video games, and on television, and is also both a voiceover artist and motion-capture veteran actor. His counts among his credits Decoys, Da Vinci's Inquest, Stargate: Atlantis, Smallville, Supernatural, Splinter Cell: Blacklist, Bitten, Len and Company, The Expanse and The Long Dark

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An astromycologist conducting research with Paul Stamets to "get to the living heart of the universe. The veins and muscles that hold our galaxies together." The Federation co-opted their research at the start of the Klingon-Federation War in order to develop an organic-propulsion system. Staal was assigned to the U.S.S. Glenn as a Science Officer while Stamets was assigned to the U.S.S. Discovery to expedite their research. Straal was killed, along with the entire crew of the U.S.S. Glenn, during black alert manuevers testing the new propulsion system.

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Rea Nolan is Star Trek: Discovery’s Klingon language dialect coach. She has worked as a voice teacher, workshop leader, coach, and performer in Canada, the United States, Ireland and the UK, and has taught in the Theatre Departments at Montreal’s Concordia University, John Abbott College, the National Theatre School of Canada, and on the MBA program at Montreal’s HEC University. She has also taught at the Academy of Live and Recorded Arts, and the Central School of Speech and Drama in London. Among her other film and television credits as a dialect coach are 12 Monkey, The Girlfriend Experience, Quantico, The Handmaid’s Tale and The Glass Castle.

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Robyn Stewart serves as Star Trek: Discovery’s Klingon language translator/consultant. Based in Canada, she speaks fluent Klingon and goes by the Klingon name, Qov.

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(Portrayed by Doug Jones)

A Starfleet Science Officer and Lieutenant Commander initially on the U.S.S. Shenzhou and then on the U.S.S. Discovery, Saru is a Kelpien, an alien prey species that lives in a perpetual state of fear and has biologically fostered the ability to sense threats, particularly impending death. That ability is manifested in their threat ganglia, which pop up by their ears when a Kelpien perceives danger.

Following the destruction of the Shenzhou and the death of Captain Philippa Georgiou during the Battle at the Binary Stars in 2256, Saru – the first Kelpien to serve in Starfleet -- was promoted to First Officer on the Discovery under Captain Gabriel Lorca. He served as acting captain during and after the Discovery's excursion to the Mirror Universe, and also learned, much to his distress, that in the Mirror Universe, Kelpiens were not only slaves, but a delicacy.

Saru initially had an uncomfortable relationship with Michael Burnham, as Captain Georgiou favored her over him during their time together on the Shenzhou, and Burnham later led a mutiny against Captain Georgiou, shattering even the tenuous trust between them. History repeated itself when Saru – nervous as ever but equally ambitious - looked on helplessly as Burnham arrived aboard the Discovery and immediately became the favorite of Captain Lorca. Saru and Burnham butted heads frequently, often out of sheer competitiveness, but ultimately achieved an understanding and worked together as colleagues and friends to help defeat the Klingons. Saru, as acting captain, also delivered an impassioned speech to the Discovery crew following the revelation of Captain Lorca’s deceit. The speech rallied the troops and brought them together as a family. 

For his efforts in helping win the war against the Klingons, Saru received the Starfleet Medal of Honor, becoming the first Kelpien to be so honored.

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David Semel, director and co-executive producer of the Star Trek: Discovery pilot episode, is a veteran, Emmy Award-nominated producer-director whose career spans more than 30 years. His many credits include Open House, Beverly Hills, 90210, Buffy the Vampire Slayer, Dawson’s Creek, Roswell, Boston Public, American Dreams, Heroes, No Ordinary Family, American Horror Story, Hannibal, Madam Secretary, Code Black and more. Semel is one of Hollywood’s go-to directors for series pilots and was nominated for a Primetime Emmy Award for Outstanding Directing for a Drama Series for his work on the Heroes pilot.

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Sam Vartholomeos co-starred on season one of Star Trek: Discovery as Ensign Danby Connor, a Junior Officer in Starfleet Academy assigned to the starship U.S.S. Shenzhou. Connor perished during the events of "Battle at the Binary Stars," but returned, albeit briefly and again fatally, as Captain Danby Connor in the late first-season Mirror Universe episode, "Despite Yourself."

The actor's previous credits include The Secret Life of Walter Mitty and The Following

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