Board Thread:The Heroes of Olympus/@comment-5896827-20160731081509/@comment-27518339-20160803004250

My guess is that through some sort of godly magic or whatever, Percy recieved more of Poseidon's traits rather than Sally's. Of course, we can all presume that Sally & Poseidon did have sexual intercourse and Sally was impregnated with some form of godly sperm, so maybe that has something to do with it. Then again it's just my opinion.