Ghosty

The true name of the Ghosties is unknown. Ghosties seems to be used a derogatory term.

The "Ghosties" were a species of aliens who came to Earth as refugees in the 21st century.

The Ghosties could be identified by their pale skin, hence their name. They had no T cells and had different blood biochemistry. Despite this, they were genetically compatible with Humans.

The Ghosties were forced to leave their home planet when it became threatened by solar flares. They created a fleet of ships, one of which landed in Cardiff in the 21st century. This ship held 13 refugees, who were grudgingly accepted by the Humans. The Ghosties began living among the Humans, some taking Humans as spouses. Despite this, anti-alien prejudices remained strong. Freda's mother and grandmother were both Ghosties. (BBCR: Asylum)