Nun

Nuns are female members of a monastic religious order. In the looser sense, nuns can also be members of a religious sisterhood devoted to service such as treating the sick.

On Earth in the 20th to early 21st century a sisterhood of nuns were manipulated by a Gorgon, it was defeated by Sarah Jane Smith, Luke Smith, Maria Jackson and Clyde Langer. (SJA: Eye of the Gorgon) On New Earth in 5,000,000,023 an order known as the Sisters of Plenitude operated the hospital outside New New York. (DW: New Earth)