In "Mirror, Mirror", the fourth episode of the show's second season, the USS Enterprise crew encounters their evil twins from the mirror universe - including Spock. What was the most notable feature of Spock's doppelganger?

While the "evil twin" trope existed long before Star Trek, Mirror Spock's famous goatee became a go-to cliche for film and TV writers whenever they introduce a character's "evil twin".

Asked by Vasilii Kulev · Last updated 5 years ago · 91.6K views · SOURCE