Board Thread:Spoilers!/@comment-24674051-20161114173607/@comment-24674051-20161115215955

The Dragon does not seem to be the vengeful sort, though. at least that is not how I perceive him. Although, I will admit that there is a lot that we don't know about his character.

However, August knew beyond doubt about the door that was trapping Isaac, and he got that knowledge from the Dragon.

My guess as to the story would be along the lines of Dragon finds out about Lily, finds out she's been sent to the LWM, and goes after her. Somewhere along the way, he is intercepted by the Apprentice, where he finds out the rest of the story, and the Apprentice convinces him to maintain distance from Lily until some future time. So the Dragon sets up shop around the world, but uses his magic to keep tabs on his daughter. when the curse is broken, he moves from Phukhet to NYC to be closer to her (plus he does seem to know where the pockets of Magic in a LWM are). Now that he's in Storybrooke (I assume that he came through with Emma and Regina, and was able to have his heart restored) he knows that it is time to seek out his daughter, who also is seeking him.