User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-66.186.254.219-20121216223025/@comment-4531192-20130102225746

There is no single leader. Annabeth is not really much of a leader anyway, but rather a strategist. Leo is an engineer and the captain of the ship. Percy and Jason are the leaders of the Greek and Roman demigods respectively. Frank is a sort of a fair warrior, similar to what Hazel is. Piper could be something like a peacemaker between the two groups.