User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-7153535-20130628164327/@comment-10137020-20130628184856

First of all there is no Roman Big 3, Since they Dont like Neptune or Pluto much. Their Big 3 is more like Jupiter, Ares and Juno.

Second of all The Big 3 made the Pact in their Greek forms thats why the Camp Jupiter people were not surprised to see so many "Big 3" kids.