Black Lady is a character in Sailor Moon Crystal.
A grown up version of Chibiusa Tsukino. However, in this form, her hair is longer and her eyes are described by Naoko Takeuchi as "done like glass balls" so that they can distinguish her eyes from Chibiusa's. She is also a bit shorter than Sailor Moon. Wears a long black dress with a slit on each side. The fabric of her skirt is also the same color as the shawl that she is usually seen with. Also, the sleeve cuffs and collar have diamonds on them. Her footwear consists of satin high heels. She wears black crystal earrings.
The Queen of Darkness is the evil incarnation of grown-up Chibiusa, who was corrupted by Wiseman. She has been reborn and is now the Queen of Nemesis. Devoted minion and Servant of Wiseman/Death Phantom.
Wiseman changes Chibiusa into Black Lady. When Prince Demande summons Wiseman he brings Black Lady who appears as black smoke.
Black Lady appears and grabs Tuxedo Mask by the arm and takes him away.
When the surface of the planet becomes too dangerous, Black Lady places Prince Demande and Saphir in the Darkness Chamber together. When Wiseman calls for her, Black Lady takes Prince Demande and Saphir through a controlled space to the Castle of Darkness. When Saphir inquires to the whereabouts of Rubeus, Black Lady informs him that Wiseman had to kill Rubeus because he rebelled and attempted to escape and he deserved it.
Black Lady presents Prince Demande and Saphir with more powerful black crystal earrings each. Black Lady sends them to make preparations to send another Malefic Black Crystal monolith to earth.
When Black Lady enters the Crystal Palace to see Neo-Queen Serenity, King Endymion is shocked to see his daughter all grown up. When Sailor Moon follows Luna-P to the Crystal Palace, Black Lady goes to grab her Crystal Star but is exiled from the Palace by Neo-Queen Serenity's power and lands outside. Black Lady realises she is evil now therefore she is unworthy of being inside the Crystal Palace.
When Sailor Moon, King Endymion, Sailor Mercury, Sailor Mars, Sailor Jupiter and Sailor Venus gather outside where Black Lady landed, she summons Wiseman. Black Lady explains she used to be known as Chibiusa now she is Black Lady, the Queen of Darkness.
Black Lady summons Prince Demande and Saphir. After Prince Demande uses his Invincible Evil Sight to immobilise Sailor Mercury, Sailor Mars, Sailor Jupiter and Sailor Venus, Black Lady tosses them aside. Black Lady instructs Tuxedo Mask to make Sailor Moon suffer. Black Lady blasts Sailor Moon before bringing a third Malefic Black Crystal monolith to earth. When Prince Demande reveals that he was never under Wiseman's mind control spell, Black Lady orders Saphir to kill his older brother.
Black Lady orders Tuxedo Mask to take the Silver Crystal from Sailor Moon. Black Lady snatches the Crystal Star from Tuxedo Mask, opens it and removes the Silver Crystal. She holds a Silver Crystal in each hand, then Prince Demande snatches them from her and threatens to bring the two crystals together.Sailor Pluto. Distraught over the death of her closest and dearest friend, Black Lady's crystal earrings shatter and she is transformed back into Chibiusa than for the first time, Sailor Chibi Moon.