Konan - Water dome would make konan's entire arsenal useless
Deidara - Water dome would prevent bombs from hitting him, he can sense chakra while fused with samehada so C4 wont work in the dome either. The only thing that deidara can do is spam bombs but by that time deidara will run out of clay & kisame will have the majority of his chakra.
Kakuzu - kisame wont be affected by the elemental jutsus, & once again if water dome is active then the hearts will be easy to stop.
Orochimaru - Debatable, but imho shark bullet would absolutely fodderize him
He can beat Hidan and Zetsu low diff. Actually he wouldn't even have to use ninjutsu, his swordsmanship would be enough. Why? He's physically stronger and faster than both of them and has incredibly stamina. Samehadas ability to suck chakra is just icing on the cake.
Kakuzu and Sasori would be very challenging, but I think he could do it. If he traps them in the waterdome it's all over. In their he's much faster than them and he can suck all their chakra with a few hits. Now can he trap them in the waterdome? Yes.
It's a pretty fast jutsu seeing as he was able to trap Killer Bee in it and even if they hit him with an attack before that he's a very resilient shinobi and on top of that can heal himself thanks to Samehada.
Sasoris poisonous weapons could of cause be a problem, but if he can dodge Killer Bees pencil attacks then he can definitely dodge Sasoris attacks aswell:
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Especially as soon as he gets in the water.
The rest of the akatsuki he can't beat though. Maybe he could have beaten Oro back when he was in the akatsuki, but definetly not current Oro. And Deidara would be a terrible match up for Kisame. When flying on his dragon he's faster than Kisame and can just keep on bombarding him from long range. He'll be way out of reach so Kisame can't even land a hit on him. Deidara wont even be needing C4 which would mean certain death to Kisame since he can't counter it.
And the rest of the akatsuki are simply on a higher level than Kisame
He can beat Hidan and Zetsu low diff. Actually he wouldn't even have to use ninjutsu, his swordsmanship would be enough. Why? He's physically stronger and faster than both of them and has incredibly stamina. Samehadas ability to suck chakra is just icing on the cake.
Kakuzu and Sasori would be very challenging, but I think he could do it. If he traps them in the waterdome it's all over. In their he's much faster than them and he can suck all their chakra with a few hits. Now can he trap them in the waterdome? Yes.
It's a pretty fast jutsu seeing as he was able to trap Killer Bee in it and even if they hit him with an attack before that he's a very resilient shinobi and on top of that can heal himself thanks to Samehada.
Sasoris poisonous weapons could of cause be a problem, but if he can dodge Killer Bees pencil attacks then he can definitely dodge Sasoris attacks aswell:
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Especially as soon as he gets in the water.
The rest of the akatsuki he can't beat though. Maybe he could have beaten Oro back when he was in the akatsuki, but definetly not current Oro. And Deidara would be a terrible match up for Kisame. When flying on his dragon he's faster than Kisame and can just keep on bombarding him from long range. He'll be way out of reach so Kisame can't even land a hit on him. Deidara wont even be needing C4 which would mean certain death to Kisame since he can't counter it.
And the rest of the akatsuki are simply on a higher level than Kisame
that justu one niddle, and ading lighting does not mean more speed, but more cuting power. but sasori can spam those with more speed. kisame barely dodge one.