Danelle Lothston

Danelle Mallister was a Lady of Harrenhal and the head of House Lothston. She's also known as Mad Lady Lothston and is the stuff of tales and horror stories.

According to tales, Mad Lady Lothston cooked children, which she captured by sending a giant bat - the sigil of House Lothston - out of the castle of Harrenhal, bathed in blood, and served feasts of human flesh.

In the books
In theA Song of Ice and Fire novels, Mad Danelle's backstory is the same. She ruled Harrenhal during the reign of Aerys I and was a loyal vassal of the Iron Throne. She had long red hair and wore tight-fitting black armor.