Zentriax

"Long ago, amidst the chaotic forces at the beginning of the universe, several entities were created. Some were good, somewere bad,but one rose above the rest and killed most of them,Zentriax!" the Doctor to Amy (DW: the Reign of Fire)

Zentriax was created at the beginning of the universe by the chaotic energy released. He urged to do nothing more take over the universe and re-shape it into a universe of chaos. He is one of the most powerful beings in the universe and is feared by all who know of his might. There are many semi-universal objects, that exist in this universe and the void, that stop him escaping and wreaking havoc. He has no emotions but anger, anger towards the whole of reality for his imprisonment. He is often believed to have created the parallel world in which the Cybus Cybermen came from out of anger.He is a truly terrifying being.