The Queen of Darkness, Black Lady

The gang has returned to the present day Tokyo to search for Chibi Usa who has been lured by Wiseman. They see a cloud of dark energy in the sky, but as they run towards it, their path is blocked by a mysterious woman. She introduces herself as the Queen of Darkness, Black Lady!
Sailor Moon R Episode #85
The Queen of Darkness, birth of Black Lady
Ankoku no joou Black Lady no tanjou