Personally I'd say Gaara pre-oro invasion.
He was practically a different character then than he is now.
Other than that I wouldn't say madara and obito are ruthless. They're just naive (in their own sadistic ways) and pure evil. Someone who's very evil isn't necissarily ruthless.
I'd say its between kisame and sasori as second.
He was practically a different character then than he is now.
Other than that I wouldn't say madara and obito are ruthless. They're just naive (in their own sadistic ways) and pure evil. Someone who's very evil isn't necissarily ruthless.
I'd say its between kisame and sasori as second.
