Shadow people are like make-believe friends that you might pretend to play with, but other people can see them too! They're called shadow people because they look like dark, shadowy figures that move around like people, but you can't really see any features like a face, clothes, or hair.
Sometimes, when it's dark or when you're feeling scared, your brain might play tricks on you and make you think you see shadow people when there's really nothing there. Some people think that these shadow people are ghosts or spirits or aliens, but there's no real evidence that they exist!
It's important to remember that even though it's normal to feel scared or nervous sometimes, there's nothing to be afraid of when it comes to shadow people. If you ever feel worried, you can always talk to a grown-up or someone you trust who can help you feel better.