Dementor

A Dementor is a terrifying creature that resembles a hooded figure in a dark cloak.
It has no eyes, nose, or mouth, but a gaping hole where its face should be.
It has a scabby, slimy, and greyish hand that it uses to grab its victims.
It also has a long, thin tongue that it uses to suck out the souls of people in a process called the Dementor's Kiss.
A Dementor can hover above the ground and move silently through the air.
It can also create fog and darkness around it, making it harder to see.
A Dementor is not a living being, but a manifestation of fear and despair.
It feeds on the happiness and positive emotions of humans, leaving them cold, empty, and hopeless.
A Dementor is one of the most feared creatures in the wizarding world, and the only way to repel it is by casting a powerful Patronus Charm.