Toughest To Kill..

[Melanin]

The Strongest Picks..

You must be registered for see images

You must be registered for see images

You must be registered for see images

You must be registered for see images

You must be registered for see images

You must be registered for see images

You must be registered for see images

You must be registered for see images

You must be registered for see images

You must be registered for see images

 

[Yanks]

3rd Raikage

 

[lndra]

RSM Naruto
Kaguya
JJ jins

 

[A$AP Wap]

Madara (excluding asspull)
Kaguya (only sage tech could seal her)

And a Bijuu I guess?[SUB]

You must be registered for see images

[/SUB]​

 

[legarcon]

obito, even when he dies he doesnt

 

[Black Wolf]

Hardest to kill in the sense that they just stand there and take everything you dish out at them?

1. 3rd Raikage (most durable person the manga)
2. Kimimaro (top tier regen and durability)
3. 4th Raikage (ultra durable)
4. Hashirama (Byakugo-like regen; assuming opponent doesn't know Byakugo limitations)
5. Tsunade (assuming opponent has no knowledge on Byakugo)

 

[Lariatoo]

Bar Ootsuki and Ootsuki related individuals (Juubi Jins)
I'll say Kabuto (Orochimaru cells, Juugo cells, Kaguya's Clan regeneration, Karin's regeneration)