“The Big Bang Theory,” about a group of nerdy friends ran from 2007 to May 2019. The first spinoff, “Young Sheldon,” ran for seven seasons and concluded last year. “Georgie & Mandy’s First Marriage,” will debut its second season in the fall. Warner Bros. and HBO Max are owned by CNN’s parent company.

Four supporting cast members from The Big Bang Theory are carrying over to Stuart Fails to Save the Universe. They are Kevin Sussman 's titular Stuart, John Ross Bowie as Barry Kripke, Brian Posehn as Bert Kibbler, and Lauren Lapkus as Stuart's girlfriend Denise.