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"Tell your father I am here, and tell him the Lannisters aren't the only ones who pay their debts."

―Oberyn Martell to Tyrion Lannister

Prince Oberyn Martell, commonly referred to as the Red Viper of Dorne, was a member of House Martell, the ruling family of Dorne, and the younger brother of Doran Martell and the late Elia Martell, and the father of eight bastard girls known as the Sand Snakes. He is well known for his fighting skills, passionate temper, and sexual appetites. 

He was killed by the Mountain. 

"If you think this has a happy ending, you haven't been paying attention.""If you think this has a happy ending, you haven't been paying attention."

―Ramsay to Theon Greyjoy

Lord Ramsay Bolton, formerly known as Ramsay Snow, was the legitimized bastard son of Roose Bolton, Lord of the Dreadfort, and the unidentified wife of a miller.

Queen Yara Greyjoy is an ironborn, Theon Greyjoy's older sister and his only surviving sibling. She was raised at Pyke, the stronghold of House Greyjoy. Yara is a fierce warrior and commands her own longship. She is currently a claimant to the throne of the Kingdom of the Iron Islands and an ally of DaenerysTargaryen.

Yara is captain of her own longship, the Black Wind.