Board Thread:Spoilers!/@comment-6175354-20151221210207/@comment-25926288-20160318194438

CoolDudeAl wrote: MyPretties wrote: I'd like to correct my comment, I just found out that Posiden was the oldest brother not Hades, meaning Olympus should have gone to Posiden not Hades. However Hades was still tricked into taking the Underworld as his domain. It varies based on source, but I like to go with Hades, Hestia, Posiden, Demeter, Hera, Zeus for the order. I go with the more likely (or rather the one that's hilariously patterned): Hestia (usually the oldest), Hades, Demeter, Poseidon, Hera, and then along came Zeus. A basic Girl-Boy pattern.

Anyway, Hades is the oldest and Zeus is the youngest and that ties in with Zelena and Regina, if we ignore Poseidon, which I think they will. I mean, there are a ton of similarities: Oddity (Green skin/ Blue flame hair), Jealousy, Sibling is royalty/ a ruler (although technically Hades and Zelena are rulers of their respective worlds), holding Hook hostage by mind games, and the list goes on.