She is the twin sister of Tory Vega and half-sister of Gabriel Nox. As an infant, Darcy and her sister were placed in a mortal family as changelings. They lived in the mortal realm until they were taken to the Zodiac Academy. Darcy is the younger twin, born at eleven minutes and three seconds past midnight.
Before her death, Merissa foresaw that her children were in trouble, so she took the twins to the mortal world so that they could grow up as changelings. Merissa took the twins, and traded them for a pair of mortal twins, Darcy and Tory Gomez. Right before she and Hail died, Lionel Acrux used Dark Coercion to find out where she placed them in the mortal realm.
After the fire, the twins were placed in the foster care system. They did not stay at any foster home for very long. Some foster parents said they were troublemakers and thought them difficult to parent, others were only fostering them for the money. Their last foster placement was Pete and Darla.
Two months before their eighteenth birthday, Darla left Pete. He was neglectful and cruel. He threw them out the day before they turned eighteen because he would no longer receive payment for fostering them. They started renting a tiny, run-down apartment, with just a pull-out couch and no bed. With no money to their name, Darcy started buying and selling unwanted items from students at her school for a small profit, and Tory started stealing motorbikes to earn money.
They made barely enough to scrape by. She escapes when a man tells the cops to let go of her, and she runs back to the apartment. Later that night, Tory comes home with a stranger who introduces himself as Professor Orion.
