Notes:

So today I've decided to introduce you guys to the world of Celtic and British Mythology through the medium of Monster Girls. Because if I used actual depictions, they'd all end up in the Nightmare Fuel gallery.

The Irish and Scottish have Banshees that foretell the death of an individual with their haunting wails or by washing the clothes of the soon to die.

Us English have hellhounds like the Barghest instead. And, unlike Banshees, the Black Dogs of England sometimes take a more direct role in killing the doomed individual.