- Primary Subject: Stuart Fails to Save the Universe DC Comics Crossover
- Key Update: Episode 9 of Stuart Fails to Save the Universe featured a crossover with the DC Universe.
- Status: Confirmed
- Last Verified: September 18, 2026
- Quick Answer: While episode 9 crossed over with DC Comics, the show is not officially part of the DC Multiverse. Co-creator Zak Penn called the event a fun narrative opportunity made easy by shared Warner Bros. ownership.
The ninth episode of Stuart Fails to Save the Universe saw the main gang visiting the world of DC Comics. Does it mean that the series is officially part of the DC multiverse?
Throughout the first season of The Big Bang Theory spinoff series, Stuart Bloom and the gang went through various universes. However, in the most recent episode, they ended up in the world of the DC universe with appearances from Jay Garrick/The Flash and Mr. Freeze. So what does it mean for the DC canon?
Is Stuart Fails to Save the Universe Now Part of the DC Multiverse?
While Stuart Fails to Save the Universe managed to have a crossover with DC Comics, it does not necessarily indicate that the world of The Big Bang Theory is considered part of the DC Multiverse.
The episode was just a fun opportunity for the series to explore a well-known comic universe, plus it helps that they are all owned by Warner Bros., so there was no difficulty for the producers to partner with DC Comics for the crossover.
The writers collaborated with DC Comics president Jim Lee for the episode. Originally, they wanted to feature Green Lantern as the hero the gang would encounter, but they weren't allowed to because of Lanterns. That's why they settled on Jay Garrick's Flash.
"They told us we couldn’t have him because of [HBO’s live-action series] Lanterns, which I understood,” series co-creator Zak Penn told Deadline.
"Chuck [Lorre] was a little grumbly about it, but Bill [Prady] and I pointed out to him that Flash was actually perfect. If we needed something that’s going from dimension to dimension, Flash worked even better than Green Lantern."
Penn added, "It was half opportunity and half what they encouraged us, but Golden Age Flash appealed to us a lot, just because he’s kind of silly. No offense to Golden Age Flash."
When asked whether the second season would cross over with the DC Universe again, Penn teased the possibility and said that he "would be shocked" if they did not consider the idea.
"The writers’ room hasn’t started yet. Next week, we’re going to get back together and start talking about this," he said.
What Is Stuart Fails to Save the Universe About?
Stuart Fails to Save the Universe follows comic book store owner Stuart Bloom, who is tasked with restoring reality after he breaks a device built by Sheldon and Leonard, accidentally bringing about a multiverse Armageddon.
Stuart is aided in this quest by his girlfriend Denise, geologist friend Bert, and quantum physicist Barry Kripke. Along the way, they meet alternate-universe versions of characters we’ve come to know and love from The Big Bang Theory. As the title implies, things don’t go well.
The main cast includes Kevin Sussman (as Stuart Bloom), Lauren Lapkus (as Denise), Brian Posehn (as Bert), and John Ross Bowie (as Barry Kripke).
New episodes are released every Thursday on HBO Max. It has already been renewed for a second season.
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