Baius
If that is the case, then though they may not be named as you recall...it may be one of those avaricious leaders of the past—someone with a vendetta against Light and Dark...
Or perhaps...a darker force even...behind those avaricious leaders? Something or someone that stoked that wickedness, but was unseen...and as a result of the Catastrophe being thwarted...
But no, that makes little sense. An entity who strove to stoke the fires of conflict and greed to such a degree—whose intent was no doubt to bring ruin to the world—would not simply retire to watch heroes dismantle their work...
Certainly, if such a person existed, they would have appeared before you, to stop you.
But if something that you did, unknowingly...caused the perpetrator to be...shackled, to not be able to reveal themselves...