- Primary Subject: Stuart Fails to Save the Universe trailer
- Key Update: HBO released the official trailer revealing a multiverse plot and multiple returning Big Bang Theory guest stars.
- Status: Confirmed
- Last Verified: June 24, 2026
- Quick Answer: The trailer confirms appearances by Bert, Denise, Kripke, Beverly Hofstadter, Ramona Nowitzki, Larry Fowler, and a cameo by Jon Cryer.
HBO has dropped the official trailer for Stuart Fails to Save the Universe, and it features the return of familiar faces from The Big Bang Theory.
The spinoff features the return of comic book store owner Stuart Bloom (Kevin Sussman) as he finds himself tasked with restoring reality after breaking the device that Sheldon (Jim Parsons) and Leonard (Johnny Galecki) built.
With a multiverse Armageddon about to unfold, whose help will Stuart receive?
Which The Big Bang Theory Stars Appear in Stuart Fails to Save the Universe Trailer?
The Stuart Fails to Save the Universe trailer opens with Stuart revealing that he is “the chosen one” while in a futuristic setting with his geologist friend Bert (Brian Posehn).
The next scene shows where it all began: in his comic book store, where a mysterious scientific device appears, creating an orbit that leads to nowhere.
As Stuart accidentally activates it, a sudden visual break in reality occurs, from flickering lights to distorted sound, and the multiverse begins to destabilize around him.
Fast-moving shots show reality collapsing, with different versions of environments overlapping.
As he is pulled into what looks like a mission briefing, he is joined by returning supporting characters like Denise (Lauren Lapkus), Kripke (John Ross Bowie), and Bert. From there, they realize that everything happening is because of Stuart.
But these three are not the only familiar faces fans are about to see in Stuart Fails to Save the Universe.
In fact, a quick glimpse shows other The Big Bang Theory characters joining the show, including Christine Baranski as Beverly Hofstadter, Riki Lindhome as Ramona Nowitzki, and Larry Fowler. Jon Cryer (Two and a Half Men) also appears in the kaleidoscope sequence.
With them on the fold, fans can expect a hilarious sci-fi journey that Stuart is about to lead.
What is Stuart Fails to Save the Universe About?
The Stuart Fails to Save the Universe trailer features a stark difference from its parent show, The Big Bang Theory.
Compared to the original’s trademark sitcom tone, the spinoff features chaotic, high-concept sci-fi comedy centered on the unlikely “chosen one,” Stuart Bloom.
The clip quickly sets up the show’s premise, with Stuart accidentally triggering a multiverse catastrophe after mishandling the device Sheldon and Leonard built.
As this mistake fractures reality, it results in collapsing timelines, alternate dimensions, and distorted versions of The Big Bang Theory world.
This forces Stuart to become a reluctant superhero, while admitting he doesn’t know what he is doing or how to fix anything.
Stuart Fails to Save the Universe is set to premiere on July 23, 2026, on HBO Max.
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