"The Big Bang Theory" ended in 2019, and one of the many legacies that the long-running and beloved CBS sitcom created by Chuck Lorre and Bill Prady left behind is that the series was filled with extraordinary guest stars and supporting players. Some of them, in fact, are set to star in their own spin-off. The second major "Big Bang Theory" spin-off after the success of "Young Sheldon" (which cast Iain Armitage as, well, a young version of Jim Parsons' Sheldon Cooper from the original series), titled "Stuart Fails to Save the Universe," will feature Kevin Sussman, Lauren Lapkus, Brian Posehn, and John Ross Bowie, all of whom played great recurring roles on the first series.
It's great that those actors -- who played Stuart Bloom, Denise, Bert Kibbler, and Barry Kripke on the original show, respectively -- are returning for more screen time. Though we don't know if Parsons, Kaley Cuoco, Johnny Galecki, Kunal Nayyar, Simon Helberg, Melissa Rauch, or Mayim Bialik will make cameos in "Stuart Fails to Save the Universe" as Sheldon, Penny, Leonard Hofstadter, Raj Koothrappali, Howard Wolowitz, Bernadette Rostenkowski-Wolowitz, and Amy Farrah Fowler, it would actually be pretty cool if other supporting characters from "The Big Bang Theory" showed up and got to play around a bit more in this universe. The five characters listed here were highlights on "The Big Bang Theory" whenever they were on-screen, and whether they were written off or simply appeared occasionally, they just didn't get enough play. Here are five of the best "Big Bang Theory" characters who should have gotten way more screen time.