The Humanoids are enemies that don't seem to be actual Suits. They appear to be more human-like than what a suit would be. These enemies are named UO, Undying, and Slester.
UO is a tall, female humanoid who is supposed to start in the Meat Freezer on Night 5.
The Undying is a tall, red male humanoid who is rumored to start on Night 3 or the Pirate Caverns event.
He is seen sitting in the meat freezer and then get in the office. When it occurs, the player must cut the power.
Slester is a humanoid that visually resembles a voodoo doll. It will appears on the screen of the office when the power is cut off and will make the player unable to use the flashlight.