When you kill Titan his death quote is as follows:

"Titan: Hie, my children, into the dark! He will not be denied..."

Who is "He"? I could make a couple guesses but I don't think I could fundament any of them. Using the word "dark" I'd say it could be Zodiark but why would Titan be the only primal to reference it?

Anyone have theories or did I somehow miss something glaringly obvious?