The Black Moon Clan (ブラックムーン一族, Burakku Mūn Ichizoku) is a group of fictional characters in the Sailor Moon manga series by Naoko Takeuchi. It comprises the main antagonists of the second major story arc, which is called the Black Moon in the manga and Sailor Moon Crystal, and which fills most of Sailor Moon R season of the first anime adaptation. They are first introduced in chapter #14 "Black Moon Kōan – Sailor Mars", first published in Nakayoshi on March 3, 1993. In the DIC English adaptation, their name is changed to the "Negamoon Family".