A familiar figure from the world of ‘The Big Bang Theory’ has resurfaced in the latest teaser for upcoming spin-off ‘Stuart Fails to Save the Universe’, giving fans another glimpse into the expanding sitcom franchise.

Wil Wheaton, who appeared throughout much of the original series as an exaggerated version of himself and one of Sheldon Cooper’s most memorable rivals, makes a brief appearance in HBO Max’s newly released preview reel.

In a quick moment featured around the midway point of the teaser, Wheaton can be seen inside Stuart’s comic book store apparently launching an energy blast towards Stuart, Denise, Bert and Barry Kripke.

It remains unclear whether Wheaton will reprise the same fictionalised version of himself from the original sitcom or appear as an alternate-universe variation tied to the spin-off’s multiverse storyline.

The new comedy series is scheduled to premiere on July 23, with the first season consisting of 10 episodes. HBO Max plans to release new instalments weekly on Thursdays.

According to the show’s official synopsis, comic book store owner Stuart Bloom, played by Kevin Sussman, accidentally triggers a multiverse disaster after damaging a device created by Sheldon and Leonard.

Stuart then embarks on a mission to repair reality alongside his girlfriend Denise, portrayed by Lauren Lapkus, geologist Bert Kibbler, played by Brian Posehn, and physicist Barry Kripke, portrayed by John Ross Bowie.

The series promises appearances from alternate-universe versions of familiar characters from ‘The Big Bang Theory’, a concept hinted at through Wheaton’s cameo. Another returning face from the franchise, Joshua Malina, who portrayed Caltech president Siebert in the original series, was also featured in an earlier trailer.