Board Thread:Spoilers!/@comment-25568248-20141103073124

When David mentions Asgard it made me think about all the times charecters have been forshadowed, like when Regina said that she didn't care if the book made her green then a few episodes later Zelena appered. http://onceuponatime.wikia.com/wiki/Thread:169182

Maybe an appearance from a superhero will happen. 