Editor's note: The below contains spoilers for the Alien: Earth finale. Noah Hawley's Alien: Earth is not only filled with plenty of gory xenomorph action, along with the debuts of other terrifying ...

In episode 4 of IT: Welcome to Derry, the world finally learned about Pennywise the Clown's true form and how an alien creature from outer space called The Galloo became a despicable creature on Earth ...