The Intellectual Phantom.

[Zock the Sock]

This is Dark Matter: A sophisticated soul that wanders the outskirts of schools, in search of the children lacking in intellect. If he finds one, he will put them unconscious in the least painful way possible, and tutor them until they improve in their studies. Often on Halloween, schools tell Dark Matter's story in order to protect the school grounds from hooligans in wish to desecrate the place of learning on Hallows eve.

So watch out for the boredom that follows his lessons on one of the most beloved holidays.