The Dark Realm is a realm on ABC's Once Upon a Time. Time works differently in this realm, which suffers under the Black Fairy's reign of terror. The realm is allegedly under a curse.
- S6, E11: "Tougher Than The Rest" (flashback)
- S6, E16: "Mother's Little Helper" (flashback)
- S6, E19: "The Black Fairy" (portal)