The official synopsis for Stuart Fails to Save the Universe proves the spinoff will bring back The Big Bang Theory's characters, but there's a catch.

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.

Kevin Sussman, Lauren Lapkus, Brian Posehn, and John Ross Bowie will reprise their roles in the new series from "BBT" creators Chuck Lorre and Bill Prady.