The Creepy Old Man is an NPC in Zalda Abridged. He serves no other purpose other than chase Dink around and give no help whatsoever to Zalda.
The Old man's history is shrouded in mystery. Not even the gods, who have watched over the world for millenia, or even the wisest people in all of Eluryh know his past. Only he can give that piece of the puzzle, and even he chooses not to share. The only real evidence we have is a restraining order (which is still in effect) that dictates he cannot be 50 meters within any school district from the age of what looks to be... 20.