User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-5812567-20121215010229/@comment-4649443-20121216211259

Jason is another good choice. If Thalia was around Gaea could get the Sky and Sea and have omnipotence.

On that note, I had this crazy idea:

Percy=Water

Jason=Air

Leo=Fire

Hazel=Earth

Sounds like the four basic elements according to alchemy. Or Avatar.