With its final episode, “The Real Monsters,” Noah Hawley’s Alien: Earth cements its place as a bold, wholly original, and distinctly idiosyncratic tale within the larger franchise that dares to chart its own course and refuses to look back. In this way, “The Real Monsters” closes the series out with a bang, refusing to go quietly into that franchise-approved, algorithmically-dictated goodnight. But by steering all the way into the skid, Alien: Earth manages to craft characters that feel both organically comedic and tragic in their childlike innocence. Samuel Blenkin as Boy Kavalier in Alien: Earth episode 6. Episode Grade: AAs Alien: Earth comes to a close, I am personally delighted to see it so utterly unbeholden to expectations.