Fomorian

Fomorian or Fomor and humanized as Monster are a fourth tribe that invaded Erinn from an unknown land.
In history, the Partholons and the Tutha Dé Dananns battled these monsterous beings but many attempts were in vain. Even the Elementalists had major problems dealing the Fomorians. The next generation of Milletians joined the battle as well, and their combined force with the Tutha Dé Dananns allowed them to succeed.
The tribe is led by a God named Cichol, who only intends on "blood purification" on every single land. Cichol, God of Darkness, King of Fomorians, acts as a major antagonist residing on Erinn and rebels even against the other Deities as well. Many attempts by the Milletians tried to stop him, though many failed...