Lavos is a being that came in prehistoric times, and bore it's way into the earth, "sleeping" for millions of years, gaining more energy, slowly drinking it from the planet itself, so that one day, "The Day of Lavos" would come, in the year 1999 AD. On this day, he would have enough power to eradicate humanity, though he is summoned early, in the year 12 000 BC, and takes the opportunity to control the Queen Zeal in her crazed and vulnerable state after the Mammon Machine's activation, and uses her as a protector of sorts until he has enough power of his own.