An unnamed woman is the older sister of John Constantine.
At some point, the woman left her brother John Constantine to their abusive father.
- "The Rage of Caliban" (mentioned)
DC's Legends of Tomorrow
- "Necromancing the Stone" (mentioned)
Behind the scenes
- In the DC comics, Cheryl Constantine Masters is the sister of John Constantine. Instead of her leaving John behind with their father, she had stayed when John left at 17.