Strongest opponent Karin can beat.

[senjusana]

Probably Konan.

 

[ultraChalk]

Those chains literally solo( if in doubt you can see the damage she did to the statue, a statue no one stopped but her ) so :

Zetsu
Sakura
Hidan
Sasori
Kiba
1010
Bolt
Salad
Chocho
Iruka
Ebisu
Udon
Shizune

Is there a reason Mitsuki is not on that list?

 

[Shanks]

She is weak i think she can take on K11 .