There can be only one Dragon King. The king is usually a male wasp, and his rule lasts until he is killed. Dragon Kings have been known to rule for thousands of years. Once the Dragon King is killed, the next most powerful dragon (or whichever dragon happens to be nearby when the coup occurs) eats the deceased king's heart. Through this method, all the power of all the past kings passes on to the new king. The effects of this are tremendous: the new king spontaneously grows to gargantuan size, dwarfing all other dragons. It is for this reason that Dragon Kings last so long as rulers. Their strength and power multiplies exponentially, and they inherit the combined knowledge of all kings before them, effectively making them an Elder of the Universe, one of the many titles Dragon Kings use. They are also known as Devourer of Worlds. Each Dragon King is progressively more powerful than the previous one.