Dream Boss

A Dream Boss is a ghost Boss that is unlocked by defeating a specific living Boss and then striking their corpse with the Dream Nail. The player will be transported to the Dream World and must perform a short platforming sequence to reach the boss room, which will be set up in a similar fashion to the room the player fought the original Boss in.

Dream Bosses are significantly more challenging than their living counterparts, with much faster and more complex attack patterns, along with much greater health.

When defeated, a Dream Boss will grant a certain amount of Essence, just like Dream Warriors.

There are 3 Dream Bosses in Hallownest.

Losing a Dream Boss battle
It's good to note that you do not actually die during a Dream Boss battle. If you lose, the player will simply wake up next to the corpse This means several things:
 * You do not leave behind a Shade.
 * You do not lose part of your Soul Vessel.
 * You do not lose any Geo.
 * The Fragile charms sold by Leg Eater do not break, making Fragile Strength and Fragile Heart particularly good choices if the player finds themselves dying often.