Charlotte Sydney was the daughter of Thomas and Mary Sydney. At a young age, an alien parasite slithered into Charlotte and took root around her spine, draining her energy unless there were nearby corpses which it could feed off instead.
Charlotte's parents began killing guests at Sydney Seaside Lodgings to feed the parasite and keep her alive.
In December 1979, Erimem, Ibrahim Hadmani, and Helena visited Sydney Seaside Lodgings and met Charlotte. After finding the drained corpse of Toby, Erimem and her friends deduced more or less what was going on and confronted Charlotte and her parents. Helena killed the parasite by overfeeding it with her near-unlimited lifeforce.