Cassiopeia Du Couteau is a cunning and ambitious character in the game League of Legends. She is the younger daughter of General Du Couteau and the sister of Katarina, both prominent figures in Noxian society. After being cursed during a quest for power, Cassiopeia was transformed into a deadly serpent-like creature. As a mage, she uses her venomous abilities to control and destroy her enemies. Cassiopeia plays a significant role in Noxus's internal politics and is known for her intelligence and manipulative nature.