User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-122.164.246.114-20121221062619/@comment-3146930-20121222231333

Frank is the most likely choice, but once again he is a descendent of Poseidon, not Neptune. The other likely choice is Arion, who could just eat the jewels that Hazel calls up, but that won't cure her of her curse.