Board Thread:General Discussion/@comment-25081838-20150101012325/@comment-26255666-20150401212749

DarkRobin wrote: While I don't doubt they will introduce more elements and characters from Greek mythology, I don't believe they will go so far such as bringing in the Olympian Gods. Monsters, enchanted items and people with powers they can explain away with magic. If the Gods come in play it's a little too much, unless they want to settle that Gods are actually people with powerful magic. I don't believe it goes well with the show. It is still more about fairtales and stories than deities.

And there in lies the brilliance of the portal world. The Olympian Gods can still be Gods, just in their world. Poseidon was clearly not in "our world" but he was a God nonetheless.