Sources: https://cryptidz.fandom.com/wiki/Indrid_Cold https://paranormal-strange.fandom.com/wiki/Glasgow_Grinning_Man https://www.thisman.org/theories/ https://members.huntakiller.com/blog-articles/2020/12/20/the-hat-man-is-a-shadow-person-who-will-keep-you-up-at-night