What is a person who studies monsters called?

A person who studies monsters is often referred to as a "cryptozoologist." Cryptozoology is a field that investigates the existence of creatures whose existence is not substantiated by mainstream science, often focusing on legendary or mythical beings such as Bigfoot or the Loch Ness Monster. Additionally, some may refer to themselves as folklorists or mythologists when studying the cultural aspects and narratives surrounding these creatures.