Kelsey

https://www.sleepfoundation.org/parasomnias/sleep-paralysis 

https://www.medicalnewstoday.com/articles/295039 

https://www.livescience.com/56422-sleep-paralysis-different-cultures.html 

https://amhsnewspaper.com/20331/mythical-monsters/mythical-monsters-sleep-paralysis-figures/ 

https://en.wikipedia.org/wiki/Night_hag 

https://en.wikipedia.org/wiki/Incubus 

https://en.wikipedia.org/wiki/Pesanta 

https://en.wikipedia.org/wiki/Batibat 

Alanna

https://www.cheatsheet.com/entertainment/lucy-liu-once-claimed-to-have-been-intimate-with-a-ghost.html/ 

https://mythology.net/demons/succubus/ 

Wikipedia

Reddit stories 

Images

https://www.deviantart.com/danidrama/art/24-SLEEP-PARALYSIS-DEMON-859136873

Google Images