no individuallyAre we talking 5 v 1? I'm not sure if any of them will stand a chance then...
But if not, with the restrictions above in mind, I'll pick Kisame. Kisame could probably handle all 5 but not all 5 at once.
so whos the best to kill ay, mei, gaara, tsunade, oonoki seperately
so gaara vs deidara
tsunade vs itachi, etc.