What do you call a female demon that is that is in a misty spirit like form and is murderous?

the first demoness that came to my mind was ‘ THE MORRIGAN’. she is one of 3 war goddesses , she is also the mighty queen viewed either as the triple goddess or the or the death aspect of the goddess. in legend the morrigan protected the tuatha de danaan with a cover of fog and rain so that their boats could land upon the shore of ireland. on battlefields she appears as a raven or scald crow, eating the bodies of the dead. she could present a winsome side that hid her secret intentions of destroying someone, or she could be openly vengeful .

you could possibly have a demon that is the daughter of an incubus and the morrigan, which should give you the type of demon you are seeking.

so a morrigan demon is a soul demon? I wonder if there is a name for a demon that only feeds on blood?

i looked all through my demon book and the morrigan is pretty much the best one, there is a male demon that licks the soles of its victims feet and drains them of blood, but that didn’t fit with what you were looking for. the morrigan can kill and devour dead flesh, and can be murderous.

the hard part here is that the majority of demons more or less can not harm the living, and the few that can are pretty much specialists and from different regions of the world. i will look in my necronomicon and see if maybe i can find an old sumerian demon for you out of the 50 names of marduk.

here are a few more that i found from another of my books.

ALUKA or ALUGA, ESTRIE, LAMIA, MARA, MOROII, WURDALAK,

all of these are female vampire demons from around the world.