The House of Lannister is one of the Great Houses of Westeros in the fictional world of A Song of Ice and Fire by George R.R. Martin. Known for their wealth and power, the Lannisters are based in Casterly Rock and are famous for their motto, "Hear Me Roar!" They are often associated with the color gold and the lion symbol. The Lannisters play a significant role in the political landscape of King's Landing and the Iron Throne struggles. Key members include Tywin Lannister, the patriarch, and his children, Cersei, Jaime, and Tyrion. Their complex relationships and ambitions drive much of the series' conflict.