The Tall Man has many superhuman powers, such as superhuman strength, telekinesis, and many others. The Tall Man has been seen to lift a grown man with one hand, take away an object from a person's hand with his mind, etc. The Tall Man's signature weapon are Sentinel Spheres, flying silver spherical objects (also known as "Spheres" and "Sentinels") that conceal many weapons inside of them, such as drills, lasers, saws, and many more. The spheres contain the brains of the dead bodies that he crushes down into the zombie dwarves, his dwarfish undead slaves that came from a hellish dimension that he first travelled to. He also psychically controls Gravers and Demon Troopers. While having few weaknesses, the Tall Man has shown some vulnerability to cold temperatures.