Board Thread:Lore Discussion/@comment-10167444-20130604182628/@comment-16047389-20130820205041

If this were the case, I doubt either Frampt or Kaathe would be that opposed to the other one's plans. Kaathe mentions that Frampt "lost his sense, and befriended Lord Gwyn." I believe that it is likely that the primordial serpents' original purpose is to serve the Furtive Pygmy and bring about the Age of Dark. However, along the way, Frampt had befriended Gwyn and decided to side against the other serpents to try and prolong the Age of Fire further, which is why he leads the Chosen Undead to succeed Gwyn instead of letting the First Flame die out. But if the Chosen Undead chooses the Dark ending, Frampt (having no other purpose now that the Flame is abandoned and Gwyn dead) returns to his original duty as a servant to the Dark Lord.

While I believe that Frampt was trying to get the Chosen Undead to sacrifice themselves to light the Flame, I think Kaathe genuinely wants the the Chosen Undead to become the Dark Lord and begin the Age of Dark, even though it involves manipulating them to certain degrees.