Key Facts
HBO Max's Stuart Fails to Save the Universe premieres Thursday, July 23 at 9 p.m., bringing back fan-favorite characters from The Big Bang Theory for a multiverse adventure. The series follows comic book store owner Stuart Bloom (Kevin Sussman), his girlfriend Denise (Lauren Lapkus), geologist Bert Kibbler (Brian Posehn), and physicist Barry Kripke (John Ross Bowie) as they try to restore reality after Stuart accidentally triggers a multiverse Armageddon. Along the way, they encounter alternate-universe versions of beloved characters.
Returning Big Bang Theory Actors
Kevin Sussman (Stuart Bloom)
Sussman originally auditioned for Leonard Hofstadter in the unaired pilot. He joined The Big Bang Theory in Season 2 as Stuart Bloom, appearing in 84 of 279 episodes across 11 seasons. Now he leads the spin-off as a series regular.
Lauren Lapkus (Denise)
Lapkus debuted in Season 11's 'The Comet Polarization' as the new assistant manager of the Comic Center. She appeared in eight episodes before becoming Stuart's girlfriend. She returns as a series regular.
Brian Posehn (Bert Kibbler)
Posehn first appeared in Season 6 as geology professor Bert Kibbler, appearing in 15 episodes. He reprises the role as a series regular.
John Ross Bowie (Barry Kripke)
Bowie debuted in Season 2 as physicist Barry Kripke, appearing in 25 episodes across 11 seasons. He returns as a series regular.
Christine Baranski (Dr. Beverly Hofstadter)
Baranski earned four Emmy nominations for her role as Leonard's mother. She appeared in 16 episodes across nine seasons. The trailer confirms her return, but it's unclear if she plays Beverly or an alternate version.
Josh Brener (Dale / Trevor)
Brener appeared in Seasons 5 and 6 as Comic Center employee Dale. He returns as a new character, Trevor, a frequent customer.
Ryan Cartwright (Cole / Kyle)
Cartwright appeared once in Season 6 as Penny's classmate Cole. He returns as Kyle, a daily patron of Stuart's store.
Penn Jillette (Himself / Acne Vulgaris)
Jillette previously appeared on Young Sheldon as Acne Vulgaris. In the spin-off, he seems to play himself in a post-apocalyptic alternate reality.
Riki Lindhome (Ramona Nowitzki)
Lindhome debuted in Season 2 as Ramona Nowitzki, appearing in three episodes. The trailer confirms her return, but her role is under wraps.
Joshua Malina (President Siebert)
Malina appeared in 13 episodes as President Siebert. The teaser shows him as a U.S. Army member, but details are scarce.
Teller (Larry Fowler / Pus)
Teller played Amy's father Larry Fowler in three episodes and appeared on Young Sheldon as Pus. In the spin-off, he seems to play himself in an alternate reality.
Wil Wheaton (Himself)
Wheaton appeared in 17 episodes as a heightened version of himself. An HBO Max sizzle reel shows him firing an energy blast in Stuart's store, suggesting a wizard-like role.
Impact and What Readers Should Know
This spin-off expands The Big Bang Theory universe with a multiverse premise, allowing for creative returns of beloved characters. Fans can expect cameos from both major and minor alumni, with more announcements likely. The series promises a mix of comedy and sci-fi adventure.
FAQ
- When does Stuart Fails to Save the Universe premiere? Thursday, July 23 at 9 p.m. on HBO Max.
- Who is the main character? Stuart Bloom, played by Kevin Sussman.
- Which Big Bang Theory actors are series regulars? Kevin Sussman, Lauren Lapkus, Brian Posehn, and John Ross Bowie.
- Will there be characters from Young Sheldon or Georgie & Mandy's First Marriage? Not yet confirmed, but the list may be updated.