The Big Bang Theory Sequel's Character Return Has A Major Leonard Connection

The latest trailer for The Big Bang Theory’s HBOMax sequel, Stuart Fails to Save the Universe, just revealed how Jim Parsons’ Sheldon can return to the sitcom franchise. By the time The Big Bang Theory’s series finale aired in 2019, it was clear that neither Johnny Galecki’s Leonard nor Kaley Cuoco’s Penny were the show’s true breakout stars. Admittedly, The Big Bang Theory started out as the story of their unlikely romance.