Lavos
In the video game Chrono Trigger, Lavos is an alien being fallen from the skies in 65,000,000 B.C., causing an ice age.
Following this, by 12,000 B.C., a magical kingdom known as the Zeal kingdom had come into power. Queen Zeal harnessed the power of Lavos, to keep the kingdom afloat, above the frozen wastes of the world below.
Lavos had burrowed deep into the world, directing the evolution of the 'apes', leading them to modern humans. In 1999 A.D., it surfaced, causing fire to rain down upon the world. This devastated the futuristic human society, and by 2300 A.D., humans lived in scattered colonies, trying to survive against the new ice age.
After a party of adventurers witnessed the fate of humanity, they travelled through time and eventually defeated Lavos, leading to the events of Radical Dreamers/Chrono Cross.
Lavos laid Lavos Spawn on Death Mountain, which would eventually leave the Earth and head to other planets. On a planet, the spawn would grow in the core of the planet, harvesting the DNA of its inhabitants to create an ultimate being, manifested in the game as the "Lavos Core". The Lavos Core possessed substantial physical and mental powers, and could even revive itself if killed. Lavos is defeated, however, by Crono and his friends.
