Xemnas is a fictional character from the video game series Kingdom Hearts. He serves as the main antagonist in Kingdom Hearts II and is the leader of the organization known as Organization XIII. Xemnas is a Nobody, which means he is a being that exists after the loss of his heart, and he possesses the ability to manipulate darkness and create weapons from it. Xemnas is characterized by his silver hair and long black coat, which is typical for members of Organization XIII. He seeks to create a new world by harnessing the power of hearts and is often seen battling the protagonist, Sora. His complex personality and motivations make him a significant figure in the Kingdom Hearts storyline.