The Godbreaker

Excerpt from Aeschuleus Kane's Histories of Talonn, Vol. 1:

In the primordial times, the gods walked the earth, breaking its crust apart with their strides into the continents and islands of our age. Most mortals cowered in the shadows of their patron deities, a few learning the arcane secrets and eking out an existence for themselves. They were at the mercy of the gods, a cosmic afterthought or plaything. But a new age would soon come. The people of Talonn were beaten, weary. Angry.
A child of a celestial emissary and a mere mortal was born. Their birth was not a momentous event— many aasimar and tieflings walked the lands during those times— nor was it foretold or fated. This child, like many others, had a talent for the sword and magic alike. Yet many still feared the gods, and would not challenge their power. The child, too, was afraid, but instead of hiding they chose to fight.
It was unthinkable that a mortal could challenge any celestial, and many times they were swatted back down to the earth like a fly. But after many years, the child now grown, celestial and fiend alike began to fall upon their blade. Soon, the attentions of the gods were pulled to this rebellion, and they resolved to stop it.
The first god who turned their gaze upon the child was Istus. She reached out through the aether of time and saw what was to come, and spoke a name unto the child: Godbreaker. Then, diminishing, the goddess left the Material Plane for the deepest corner of the Abyss, never to return.
After that, one by one the gods who faced the Godbreaker were defeated. Never once did they think to fight together, as the mortals did under the banner of their champion. Struck down, the shadows cast by the gods’ warring dissipated across Talonn as they fled to their home planes, banished by vow or by the Godbreaker’s might to never return.
Thus the Age of Mortals began, and the Age of the Immortals ended. The Godbreaker, granted divinity by their victory, realized that they, too, must leave if it was truly to belong to the mortal peoples of Talonn. The Godbreaker passed from this world into a new, timeless plane of golden radiance, where they wait alone as a bulwark against the gods, should they ever attempt to return.