There are a vast number of different creatures within the wouldn't be 15 seasons worth of a show.
Because the creatures are so relevant, here is a list of which creature you would be from the series based on your Myers-Briggs Type Indicator. The different personality types are separated by Extrovert (E) and Introvert (I), Intuitive (N) and Sensing (S), Thinking (T) and Feeling (F), and finally, Perceiving (P) and Judging (J). With different combinations of these traits, each personality set leaves for totally different aspects and traits in a person. Which creature do you align with?
Ghosts - INFP
Ghosts are definitely the staple of creatures in the Supernatural world are the most common "monster of the week." Ghosts typically become vengeful spirits that Sam and Dean need to exorcise before they can move on. Ghosts always have a reason for staying tethered to the living, and those reasons can widely vary. The reason ghosts make for excellent INFPs is due to the fact that they don't really reveal themselves to everyone. Not everyone sees and believes in ghosts just like not all INFPs feel comfortable opening up. Ghosts and INFPs need like-minded and open-minded people to be seen.
Witches - ENTJ
Witches make for excellent ENTJs due to their absolutely nominating personalities. Even if a witch is in a coven, she still is totally the commander. Each witch that Supernatural has shown is always an alpha and they seem to always get what they want. They are imaginative but know how to act on their dreams and are oftentimes inspiring to others as they bring others into their ranks by their amazing powers.
Demons - ESTP
Though demons have a greater hierarchy at play, they kind of Each demon strives to be better than the rest and they all think themselves really highly for it.
Wendigo - INTP
INTPs have an unquenchable thirst for knowledge, and like them, Wendigos have an unquenchable thirst for human flesh. Wendigos are humans who became ravage beasts after consuming excessive amounts of human flesh.
Wendigos are also known to be a spirit that possess humans in order to convince them to eat human meat. The hunger is never satisfied and they are left always wanting more.
Vampires - ISFJ
While Vampires mate for life and therefore take the process very seriously. They want to protect that person at all costs and have a good and warm relationship with them. They also don't try to kill the humans they use for blood. Instead of sucking all the blood out in one go, vampires typically use humans as a reusable food source, and can even develop a co-dependent kind of relationship with them.
Werewolves - ESFJ
Like an ESFJ, werewolves have a deep need for companionship. They are meant to travel in packs and when they lose that, they go a bit crazy and become even more ruthless. Many werewolves don't become werewolves by choice but are rather turned by a simple bite from another wolf. ESFJs are also pretty popular and werewolves are one of the most common monsters in Supernatural which adds to their popular nature.
Changeling - ISTJ
Changelings are truly terrifying creatures. They are said to be the replacements for children who have been stolen by monsters. The children replacements sometimes go unnoticed by the parents, however, they have pretty bleak personalities and act overly childlike. Because of this, changelings make excellent ISTJs.
ISTJs are logical and focus more on facts than anything else. The changelings act based on how they believe children act, which makes them seem very robotic and almost eerie.
Tricksters - ESFP
Tricksters are perfect ESFPs. They are definitely entertainers and enjoy having a good time, usually at the expense of others. They enjoy trying to make people smile by playing some pretty extensive (and sometimes ruthless) pranks on them. They are typically spontaneous and energetic and Sam and Dean absolutely cannot stand them. Yet life is never boring around a trickster, you may just find yourself repeating the same day over and over again.
Ghouls - ISTP
The reason why ghouls make for the perfect ISTP is due to their incredibly adaptive nature. Adaptive in the sense that they could easily adjust to any person they take on. Ghouls are similar to shapeshifters, they can become whoever they want and alter appearance based on that. Only, they work a little different. Ghouls need to eat the corpse of the people they want to be and sometimes will even change their diets to eat someone a bit more fresh, a bit more alive. Ghouls make the perfect ISTPs as they can master any kind of tool, in this case, any kind of person that fits with their needs.
Woman In White - INFJ
There are several Women in White in Supernatural and is notably the first creature the boys hunt in the very first episode of the series. The Woman in White kickstarted the show and is a special kind of ghost that only hunts men and children. The Woman in White is very similar to that of a banshee or La Llorona. While alive, the woman would have killed herself due to woes in love affairs. She makes the best INFJ because like her personality type, she takes relationships seriously. She is in it for the long haul and won't let her partner escape from her. The Woman in White is quiet and mystical and will lure in those she falls in love with.