The Lannister Family is one of the prominent noble houses in the fictional world of Westeros, created by author George R.R. Martin in his series, A Song of Ice and Fire. They are known for their wealth, power, and the motto "Hear Me Roar!" The family is based in Casterly Rock and has significant influence over the Iron Throne. Key members of the Lannister family include Tywin Lannister, the patriarch, and his children: Cersei, Jaime, and Tyrion. Each character plays a crucial role in the political intrigue and conflicts throughout the series, showcasing the family's ambition and complex relationships.