User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-3146930-20130327013159/@comment-3146930-20130327014550

I thought it was kind of obvious. In the PJO series, Kronos didn't actually have a form of his own and instead used others for his goals and eventually took over Luke's body. In a way, he is a faceless villain which which is somewhat scarier as he is left to your imagination as to what he looks like. As far as him getting some art, pretty sure that ship sailed when he was defeated in the previous series.