The cast of Stuart Fails to Save the Universe is expanding with the addition of three recurring guest stars.
Ryan Cartwright (Mom), Josh Brener (Silicon Valley) and Tommy Walker (The Kominsky Method) have boarded HBO Max‘s Big Bang Theory spinoff. Per Deadline, Cartwright will be play Kyle, a daily patron of Stuart’s comic book store; Brener will play Trevor; and Walker will play Gary, Denise’s new boyfriend.
Fans of The Big Bang Theory will recognize Cartwright and Brener from their previous guest stints: Cartwright guest-starred in Season 6, Episode 8, as Penny’s community college classmate, Cole, while Brener appeared in two episodes — Season 5, Episode 10, and Season 6, Episode 16 — as comic book store employee Dale.
Cartwright, Brener and Walker all join previously announced series regulars Kevin Sussman (Stuart Bloom), Lauren Lapkus (Denise), Brian Posehn (Bert Kibbler) and John Ross Bowie (Barry Kripke).
In Stuart Fails to Save the Universe, which picks up after the events of Big Bang, the titular sad sack “is tasked with restoring reality after he breaks a device built by Sheldon and Leonard, accidentally bringing about a multiverse Armageddon,” according to the official logline. He is then “aided in this quest” by Denise, Bert and Kripke.
“Along the way, they meet alternate-universe versions of characters we’ve come to know and love from The Big Bang Theory,” the logline reveals — and, “as the title implies, things don’t go well.”
Stuart Fails… is the third extension of the Big Bang franchise, following prequel series Young Sheldon (2017-24) and sequel-to-the-prequel Georgie & Mandy’s First Marriage, which kicks off Season 2 on Thursday, Oct. 16 (CBS, 8/7c).
TVLine previously pressed franchise co-creator Chuck Lorre on whether we’ll see the original cast of Big Bang on Stuart Fails to Save the Universe. You can see his answer in the video Q&A embedded above.
