You sir, are brave. The only one I might just call "crazy" on is Gaara, just maybee..but I guess the whole purpose of Naruto is to not underestimate your opponent right? I mean, who would've thought 5 12-year-old twerps would defeat 5 adult, jounin-rank, curse-marked, assasins?i will add these:
13)2nd Mizukage
14)Gaara
15)Jiraiya
16)A
17)Killer B
Then again, I think A and Gaara are a bit far-fetched..Killer Bee has been under debate for a long time, I also believe Jiraiya as well..and as for the 2nd Mizukage..I forgot he even existed..what are his skills?
Note: I have not added any of these to my list. Just to clarify.