Board Thread:Lore Discussion/@comment-5632187-20130203042433/@comment-120.148.236.102-20140715111222

A small theory, not really backed up by any hard evidence, is that the firstborn could be the Crestfallen Warrior you meet at Firelink Shrine. The only links I have for this connection is that:

a)       They both are connected to war/fighting. The firstborn is the God of War, Crestfallen Warrior is dressed as a warrior/soldier.

b)       Both are fallen. The firstborn has fallen from his godly station, and the Crestfallen Warrior is, well... crestfallen.

c)        No powers. When the firstborn was cast out, he lost his powers. When you fight the Crestfallen Warrior, he just fights with a sword and shield (as opposed to Solaire who uses lightning spear).