Seventeen years after The Big Bang Theory quietly altered Stuart Bloom’s personality, the decision is now helping pave the way for the franchise’s newest sequel series. The upcoming HBO Max show, Stuart Fails to Save the Universe, will finally move the story forward in time after the original sitcom’s finale, making it the first Big Bang Theory project set in the future rather than the past.
The series centers on comic book shop owner Stuart Bloom, played by Kevin Sussman. In the new story, Stuart accidentally destroys a device created by Sheldon and Leonard that was meant to protect reality, sending him on a chaotic multiverse adventure. Familiar characters like Barry Kripke, Bert Kibble, and Denise will also appear alongside him.
Interestingly, Stuart wasn’t always the awkward and insecure character fans remember. When he first appeared in Season 2, Stuart was far more confident and socially capable — even managing to go on a date with Penny, which made Leonard jealous. However, the show quickly reshaped his personality in Season 3, turning him into the nervous and unlucky underdog viewers grew to love.
That shift may now work perfectly for the spinoff. Because Stuart evolved into a softer, more sympathetic character, audiences are more likely to root for him as the unlikely hero of the new series. Unlike Sheldon or Leonard, Stuart isn’t a scientific genius, which makes his multiverse mission even more daunting — and potentially more compelling.
In many ways, his journey in Stuart Fails to Save the Universe could serve as a full-circle moment. The once-insecure comic book shop owner may finally discover the confidence that seemed to disappear years ago.
The series is expected to premiere on HBO Max in 2026.