Warning! Spoilers ahead for Young Sheldon season 5.
CBS justifies Missy's (Raegan Revord) tragic The Big Bang Theory fate via Young Sheldon. In its 12-year-run, Sheldon's (Jim Parsons) family appeared on The Big Bang Theory, including his twin sister, who Leonard (Johnny Galecki) and the rest of the Pasadena gang were surprised to learn wasn't anything like their socially-inept genius friend. Despite Missy's cheery demeanor and street smarts, she was still the least successful Cooper sibling, at least in the traditional sense.
Missy only appeared on The Big Bang Theory twice. The first time was in season 1 when everybody met her. It wasn't until a decade later that she would return for the wedding of Sheldon and Amy (Mayim Bialik). There were several times that she was referenced in between her cameos, but despite her minimal involvement in the nerd-centric sitcom, she clearly made an impression on viewers. Now that she's a main player in Young Sheldon, CBS capitalizes on that by giving Missy her own storylines.
Related: Young Sheldon Proves Missy Is Really The Odd Cooper Sibling, Not Sheldon
While Sheldon (Iain Armitage) has been busy settling in college at East Texas Tech, his twin has been occupied with more stereotypical teenage experiences. Missy goes through her first heartbreak and even gets her own room. In Young Sheldon season 5, episode 18, titled «Babies, Lies and a Resplendent Cannoli,» she has started doing part-time jobs, including babysitting for Pastor Jeff's (Matt Hobby) newborn. Unfortunately, the only reason she is even interested in the gig is that her peer, Heather M. (Sophia Coto), has done it. This emphasizes that Missy remains to be a follower instead of being her own person; she is more
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