Jump to contentIndependentSwipe for next articleIndependent Bulletin homepageDownload our appAllNewsSportCultureLifestyleTom MurrayFriday 31 July 2026 15:07 BST'Stuart Fails to Save the Universe' cast reveals funny BTS storiesHBO Max's new spin-off series, Stuart Fails to Save the Universe, follows Stuart Bloom as he accidentally destroys a multiverse device created by Sheldon Cooper and Leonard Hofstadter.Stuart, aided by familiar faces Bert, Barry Kripke, and Denise, embarks on a mission across alternate realities to restore order to the universe.The latest episode features a major cameo from Kaley Cuoco, who played Penny in The Big Bang Theory, but in an entirely new role.This alternate version of Penny is a brunette resistance leader in an AI-controlled world, a significant departure from her original character.Co-creator Chuck Lorre said that the show's design allows original Big Bang Theory characters to recur with entirely different backstories in the multiverse.In fullBig Bang Theory fans stunned as beloved character returns in spin-off with a very different lookMore bulletinsThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in