User blog comment:The Deadliest Warrior/Harry Potter vs. Percy Jackson/@comment-422690-20100923224312

If you say "knockout blow", I'll say Harry, much as I dislike the character. He has better equipment for it.

If you're going for kill (like your comment), I'm giving it to Percy. I haven't read the book (series?) or watched the movie, but he's got more lethal weapons.