Slender Man

The Slender Man is the boss in the Forest map in the Campaign. He drops the Double Barreled Shotgun upon death.

Appearance
The Slender Man boss wears a black coat, a blood red tie, and a faceless white mask, with blood on its hands. Since the 10.5.0 update, it is much taller than the Slender Zombie and has six tentacles that are sprouted from its back.

Behavior
Slender Man will walk near you, dealing damage. Since the 10.5.0 update, its six tentacles will curve toward the player as it approaches. In the same update, it has also gained the ability to teleport, allowing it to effectively surprise and attack the player from behind.

Trivia

 * His appearance is a direct note to the Slender Man character developed by Something Awful users..
 * This boss and the Pyramid Head are the only game-related enemies apart from Pixel Gun 3D.
 * It is the only boss other than The Bug that has the ability to teleport.
 * This is the only boss who attacks in milliseconds . That is because the tentacles also do damage.

Tips

 * Stay a good distance from the Slender Boss, as if you get close, it strikes fast and can deal a huge amount of damage.