So, I've been being cyber bullied! WAAAHHHHHH!!!!!
Anyway, I was going to have an explanation of Percy's partial death in the next book called PIGGYPIMPLES: RETURN OF THE SEA, not in block capitals, and it is out., but I'll tell you now.
Percy's godly blood is like Hagrid's giant blood, he can be affected by spells, just less so than a wizard.
So stupefy makes him dizzy, and Avada Kedavra puts him in a coma lasting like a couple of days.
Sorry that everyone is so impatient.
All bow to Percy - you'd better, you need his forgiveness.
Peace out.