Board Thread:Theories and Speculation/@comment-25374145-20150312083658/@comment-25632268-20150312110431

GreatestSin wrote: without that behavior he would be really dangerous, deidara can only create explosions, if anything, i would rate deidara and the shark-guy as the weakest, than kakuzu, than hidan, than itachi, than nagato ^_^ did i oversee someone?

Kakuzu was clearly stronger, maybe not "immortal" per se, but could effectively use five elements and he used his brain in combat. And Kisame go alone against experienced jinchuriki that had full control over his beast and could win if Ay didn't show up.

If we omit Konan and Obito then I would say Deidara, Hidan, Kakuzu, Kisame, Itachi, Nagato.