Do you use he/she or it to refer to ghost?

If I have a sentence:

There are many stories which have been told about a ghost that haunted this castle. Strangely, ... (the ghost) has never appeared in front of my face for 10 years.

I notice that when it comes to "spirit, dark force", many people use "it" instead of making it personalized by using "she/he" as the subject pronoun.

Should I use the subject pronoun "he/she" or "it" to refer to the ghost?

If there are any gender cues (e.g. man in The Headless Horseman) then you should certainly use he or she.

If you don't consider the ghost as being like a person, use it.

If you think of the ghost as being like a person but you don't know the gender, follow the rules for people of unknown gender: use he, he/she, they or the ghost.

Even with gender cues, it depends on what you are trying to portray. If you want to convey that the character [or narrator] sees the ghost as a non-human entity, or something too unreal, you should still say 'it'. This could imply that the character is not going along with the ruse, whereas using he/she implies strongly that the character is in agreement that the encounter with a 'ghost' is authentic.