Jiraiya obviously because he was just pure awesome, and funny as well. Tsunade... how did she ever make it all the way to becoming Hokage in the ninja world when she is afraid of blood? Heck she is a medical ninja at that to boot. You telling me she is afraid of blood but decided to become a ninja that deals with injured and bleeding patients? Heck she couldn't even fight against Kabuto because of the sight of blood in the original series. As for Orochimaru, I can't stand his emo-wannabe-self.