Strongest Character in a 1on1? (No powerups, no Edo /Hashirama/Madara.

[Gold Lightning]

It's obviously Kaguya. Not only is Chakra itself her own original power as well as the Dojutsus, the Bijuus etc.pp., if there is only one opponent she can't be sealed.

She ate a fruit which gave her all that power -_-

 

[uzumakinaruto389]

Both in their primes ( Only actual characters we have seen in their prime AKA NO HIRUZEN.)

Hahaha No Hiruzen Lol xD

 

[Tennis Robot]

Kisame can be beaten by taijutsu users. It should probably be Shisui just because of Kotoamatsukami. The 3rd Raikage is another possibility,

 

[Zol]

She ate a fruit which gave her all that power -_-

Yet she developed these abilities herself after eating it. It's her power.

 

[ShinjuMadara]

Kaguya

Gai

Obito without hashi's cells

Itachi

there's so many