Joy Celeste Castellan is a fourteen-year-old quarter-blood. Her father is Luke Castellan, her adoptive mother is Thalia Grace-Castellan, and her biological mother is unknown.
Joy is Luke's daughter. Her biological mother disappeared when she was just a few days old. She was supposedly a drug addict who died of an overdose, but this might not be true.
Thalia is legally Joy's mother. Her name is even on her birth certificate as her mother.
Joy takes after her father. She is fairly pretty, with blonde hair, pale skin, and startlingly silver eyes. She's about 5'3, weighing 120 lbs.
Joy is foolish, irresponsible, and reckless. She can be selfish and moody. She is obsessed with stealing, which makes sense considering who her grandfather is. Like all demigods, she has ADHD and dyslexia. She hates school, homework, and reading, so her report card is full of Ds and Fs (C- if she's lucky). Joy is known for misbehaving, pranking, talking back, and constantly getting in trouble. She doesn't care very much about her appearance, often wearing ripped jeans, dirty shirts, and clothes that don't even fit properly. She does not at all care what people think of her, even if they hate her so much they want her dead. Her favorite color is red.
- Luke Castellan (Father)
- Thalia Grace-Castellan (Adoptive mother)
- Unnamed biological mother (Possibly deceased)
- Kendra Castellan (Sister)
- Jill Castellan (Sister)
- Hermes (Paternal grandfather)
- May Castellan (Paternal grandmother, most likely deceased)