Uchiha Itachi doesn't even qualify to be one of the weakest characters on Naruto. Come on you can't possibly think that just cuz Itachi lost to "HIM" means that he could be one of the Weakest characters! I mean Itachi is an S-rank criminal! He's also part of Akatsuki, doesn't that say something? Not only that but there are a lot of other weaker characters in naruto. I'm sorry I just felt that I should point that out. Anyways, I'm sticking to my other answer on who's the weakest.