Demon Quiz

What the hell!?
How dare you beat my excellent Devil Summoner Quiz up!?
But there’s no more such a chance! I've created 296 questions. Surely you see that even with infinite time, you’d never devise a way to defeat my Quiz, you monkeys!
Choose a demon that matches the following description!
Also known as Tamonten and Vaishravana in Buddhist myth, he is the strongest of the Four Heavenly Kings.
He protects the North and is the god of war.
Current Answered Status:0/296