Isabelle Lightwood is a Shadowhunter. Her family is Alec her brother, Jace her adopted brother, Robert, her father and Maryse her mother. She has long dark hair and her weapon is a long, golden whip. She likes to date Downworlders to annoy her parents. She also uses the runes and weapons like Jace and Alec. She was dating Simon Lewis. She is known to be a horrible cook because Maryse never chose to teach her because she was afraid her daughter would be permanently stuck in the kitchen after that.