Board Thread:Lore Discussion/@comment-26054788-20150131032222/@comment-27167631-20151106063358

It's a longshot, but my theory is that the DarkLurker is perhaps a chosen undead, who ascended towards a new level. Remember, size and shape doesn't matter in the Souls universe, but it might be possible that the DL is a Chosen undead.

A longshot, but it's an interesting theory: The chosen undead became a Dark lord, but still stayed on the path of the light and intends to purge all of the dark, meaning he was hunting the Pilgrims of Dark in their domain. And we, who venture into this realm, are his next prey and he intends to destroy us, even if it meant to split himself into two.