The legend of the black-eyed children is one of the creepiest ones out there.
https://sites.psu.edu/urbanlegends/2019/03/29/black-eyed-children/
https://en.wikipedia.org/wiki/Black-eyed_children
https://www.tbsnews.net/splash/legend-black-eyed-children-55705
https://weta.org/watch/shows/monstrum/dont-let-them-urban-legends-black-eyed-children
https://bangladeshpost.net/posts/legend-of-the-black-eyed-children-82991
