https://www.spirithalloween.com/blog/scary-urban-legends 16 Chilling Urban Legends
https://www.narcity.com/canadian-urban-legends-keep-you-up-at-night
Of course in some vampire movies a bat will be shown transforming into the humanoid shape.
https://www.youtube.com/watch?v=7Wf-FWgS78A Well, at 44 seconds into this video, a bat under a blanket starts to turn into a peculiar shape. Even if its CGI, it's a great depiction of the mythological transformation. But what if it isn't just CGI?
https://paranormal-intersection.blogspot.com/search?q=Urban+Legends