A Monster for my horror game

in my crappy free range horror game with a sorta set story , every once in a while, using zones, a monster made out of barriers will spawn, any ideas to make them look creepy or anything?

This can give you some ideas.

โ€œA dark zone
Unseen horrors
A new kind
Of deadly borders
Terrifying secrets
Out of sight
A horrible thing
A deadly fright
The things that go bump in the night.โ€-The Insomniac. Random poetry for your game, credit me if you use it.