Who is the main ruler of hell?

How about the Devil, the Master of Hell?

I tell you, my friends, there is a great big devil, with hoofs and horns, and a forked tail, and all that—He is the Master of Hell, as sure as you live—He is a person, too, tempting every person who lives—or ever will live—and his ways are dark—He goeth about like a roaring lion seeking whom he may devour. He is personal, for every person can make a devil of himself if he does not take heed to his steps and listen to the voice of good—or God.

Now—I hope I have proved that there is a God, a devil, a hell—they are all personal—or within a person.