Spoilers ahead. Deadline reports that after getting trapped in a comic book in the penultimate episode, Stuart, Bert, Denise and Kripke find themselves in a multi-camera sitcom in the Season 1 finale. They witness a curtain call featuring identical versions of themselves played by the HBO Max show's real-life stars. Deadline also describes callbacks to 'The Big Bang Theory,' including its animated atom transition, whooshing sound and a scene with the characters eating takeout around a coffee table.