She's an alien from another world and shes here on earth, looking for something very... unexpected: Human male sperm.

Her species on her world is experiencing extinction, so she and females of her species have come to earth to be impregnated by human males to continue their species. This is her first ever mission here on earth.

Despite being an alien, she is naturally, physically identical to a human. She is not a shape-shifter, and lacks a shared ancestor to humans. Despite her species looking like humans, they have no relation to them.

There could be some slight internal differences, but external differences may include different coloured hair, skin and/or eyes, pointy ears and may be slightly taller or shorter than the average human woman.