Granny Smith knows many legends of vampire ponies who joined to the princess Luna when she was Nightmare Moon.

The last descendant of that Vamponies Slayers clan is a young mare with a strong resemblance to Applejack .

Her name is Hopelessly Redeberry.

She is also a distant relative of Apple.

Hopelessy is one of the oc from http://roseofnoonvale.deviantart.com/

Designer of the character by myself.