The is a fictional clan existing in the 30th century in the Sailor Moon metaseries. It comprises the antagonist of the second major story arc, which is called Black Moon in the manga and which fills the majority of the Sailor Moon R anime. In the dubbed anime they are called the Negamoon Family in an attempt to connect them to the Negaverse, the dub version of the Dark Kingdom. The two groups are unrelated in the original.
Members of the Black Moon Clan come from Planet Nemesis, a fictional tenth planet of the Solar System. It is described as a planet of "negative energy", having the ability to vanish from sight, but remained traceable by X-Rays. All members of the Black Moon Clan have black, upside-down crescent on their foreheads (the inverse of the marking of the Silver Millennium). They wear earrings which, according to the Materials Collection, are made of Black Crystal and allow them to teleport.
, who calls himself , is an immortal form of Chaos from the future. In the English version of the anime, he is just called "The Wiseman" and is said to serve the Doom Phantom, a dangerous being who supposedly created the universe and now wishes to destroy the world he created through the Wiseman. In the anime the Death Phantom is represented by a skull, and near the end of the series it is revealed that Wiseman is in fact Death Phantom.
In the manga, Death Phantom was a human who lived in the kingdom of Crystal Tokyo, and possessed dark powers which he used to wreak havoc upon the citizens of Crystal Tokyo. These powers were death hands, able to reach great distances to attack people, and his evil vision, capable of controlling others with a glance. He was banished to the barren tenth planet, Nemesis, by Neo-Queen Serenity. Death Phantom merged his spirit with the planet and became one with Nemesis. He cloaked his decayed and crumbling human body, and went to Earth in order to look for discontent. He convinced residents that the 30th century utopia of Crystal Tokyo was an abomination against nature, as all of its citizens were given immortality through the power of the Silver Crystal. Thus the Black Moon Clan was born. Calling himself the Wiseman, Death Phantom led them in an attack on Crystal Tokyo, and then into Sailor Moon's past to obtain the Silver Crystal and have his revenge.
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