Here's what the cast of 'Star Trek: Discovery' looks like in real life

• "Star Trek: Discovery" is on CBS All Access.
• The series takes place 10 years before the original "Star Trek" series. 
• Some of the cast members turn into Klingons and other aliens.

The "Star Trek: Discovery" crew is back for a second season.

The series returned to CBS All Access, the network's online streaming service, Thursday. The show takes place 10 years before Captain Kirk (William Shatner) led his team into the final frontier. 

The cast includes Michelle Yeoh as Captain Philippa Georgiou, Sonequa Martin-Green as Michael Burnham, Anthony Rapp as science officer Paul Stamets, and James Frain as Vulcan ambassador Sarek, Spock's (Leonard Nimoy) father.

See what the cast looks like in real life below:

SEE ALSO: RANKED: The 13 best original 'Star Trek' episodes

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Michelle Yeoh captained the USS Shenzhou as Philippa Georgiou.

Yeoh is best known for her roles in "Crouching Tiger, Hidden Dragon" and its sequel, as well as "Crazy Rich Asians." She also starred in "Memoirs of a Geisha" and had a cameo in "Guardians of the Galaxy Vol. 2." 

Sonequa Martin-Green is Michael Burnham, and she was second-in-command of the USS Shenzhou, serving under Captain Georgiou. She was raised by Vulcan ambassador Sarek after Klingons killed her parents.

Before heading to "Star Trek," Martin-Green was on "The Walking Dead" and "Once Upon a Time."

James Frain plays Spock's father, Ambassador Sarek. It's a younger version of the role originated by Mark Lenard.

Frain was on "Orphan Black" and played Azrael on "Gotham." He's also known for his roles on "The Tudors" and "True Blood."