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Not every show has the flexibility that Community does, though. In the case of The Big Bang Theory, characters who don’t make the cut for the main friend group are usually relegated to the background after a while or disappear altogether. Here are three Big Bang Theory characters who didn’t appear enough during the show’s 12-season run.
3) Leslie Winkle

Leonard Hofstadter dates quite a few people before he gets things right with Penny, but none of his girlfriends make as big an impact as Leslie Winkle. Their chemistry stems from their work together at Caltech and from their mutual respect. Leslie is fighting an uphill battle during her run on The Big Bang Theory, though, as it’s clear that her relationship with Leonard won’t last.
The show tries to put Leslie and Howard Wolowitz together to see if similar sparks will fly. Unfortunately, that move doesn’t work, and Leslie fades into obscurity after she breaks up with Howard. It’s a shame that she doesn’t stick around for the long haul because she’s one of the few characters that can keep Sheldon Cooper in check.
2) Missy Cooper

Speaking of Sheldon, his sister, Missy Cooper, appears in Season 1, Episode 15, “The Porkchop Indeterminacy,” and becomes the apple of Howard and Raj Koothrappali’s eyes. Sheldon throws a wrench in his friends’ plans to ask his sibling out, but she doesn’t shoot anyone down, potentially setting the stage for something in the future. But Missy takes a decade-long break from the show, returning briefly in Season 11 during Sheldon’s wedding.









