Organization XIII is a fictional group from the video game series Kingdom Hearts. Composed of thirteen members, each member is a Nobodies, beings that lack hearts but possess unique abilities and personalities. They are often depicted wearing long black coats and are central to the series' plot, seeking to understand and reclaim their lost hearts. The organization is led by Xemnas, the first member and the embodiment of Xehanort's will. Each member has a number and a name that reflects their identity, such as Axel and Roxas. Their interactions and conflicts with other characters, including Sora and Riku, drive much of the narrative throughout the games.