The Hollow Knight

The base ending. With all three Dreamers gone, enter the Black Egg Temple and fight the Hollow Knight - a tragic, hard-hitting sibling that slashes, dashes and, at low health, stabs itself and bursts with infection. Dream Nail it when it stuns itself for bonus damage. Beating it without the Void Heart charm gives this ending, where you take its place as the Vessel. Get this before claiming Void - once you hold Void Heart, Hornet always interrupts and you'll get Sealed Siblings / Dream No More instead.