The Forsaken Realm is a dimension that features in He-Man and the Masters of the Universe.
This otherworldly dimension was noted to possessing dark horrors that came from the time before time. Such creatures were multi-eyed and tentacled beasts that yearned to enter into the mortal world but could only do so if a sacrifice was made at the appropriate portal to this realm. One such location into the Forsaken Realm was the Pool of Shadows on Eternia where Skeletor attempted to send Evil-Lyn after her betrayal of him to the Snakemen. One of the inhabitants of the Forsaken Realm emerged in order to accept the sacrifice but was forced to fight He-Man in order to claim its prize. During the fight, the creature was badly wounded and a deflected blast from Skeletor's Havoc Staff caused the portal to the Forsaken Realm to destabilize whereupon it collapsed thus preventing the creature from entering into Eternia.
- Its not known if there are any further gateways into the Forsaken Realm.