The Forsaken

The Forsaken is a boss added in The Binding of Isaac: Afterbirth that can appear:
 * In all environments of Chapter 2.
 * Only in and the.

Behavior

 * Spawns a Bony.
 * While at least one Bony is still alive, the Forsaken becomes incorporeal and floats erratically around the room.
 * Every tear shot towards the Forsaken during this phase passes through it.
 * When all Bonies are killed, The Forsaken moves to the center of the room before reappearing and firing 3 rotating lasers.
 * Afterwards it stays vulnerable for a few moments before spawning another Bony and repeating the process.
 * Unlike its counterparts The Haunt and The Heretic, The Forsaken does not deal contact damage while incorporeal. Rather, if Isaac walks through The Forsaken it spawns another Bony becoming vulnerable while doing so.
 * If this is repeated 3 times without killing any Bonies and having 4 alive on-screen, the 4th time Isaac walks through The Forsaken it performs a modified version of its attack with greatly increased speed and duration killing off all Bonies.

Champion Versions

 * Black: Spawns 1-2 Black Bonies instead of regular Bonies. The Spinning Brimstone attack is replaced with The Forsaken spawning 4 Dank Death's Heads and resuming invincibility for 1 second.

Trivia

 * It is the posthumous version of The Haunt.
 * When The Forsaken disappears, it covers its eyesockets with its arm-like bones. This is most likely a reference to Boos from the Mario franchise.
 * The Forsaken appears to be The Haunt without its ghostly exterior.
 * During the versus screen, the Forsaken's Bony-spawning sound can be heard. The Forsaken is one of seven bosses that can be heard during the versus screen, the other six being The Stain, Big Horn, Mom, Mom's Heart (pre-Repentance), It Lives (pre-Repentance) and Mother.
 * The Forsaken can be found in, even before being unlocked.
 * The Forsaken has an alternative resurrected variation known as the The Heretic.

The Forsaken