Danzo is the character you love to hate, because he is thoroughly nasty and dispicable. That is what makes him a good character.
Karin......She is just and aweful character in every way. Even for comedic purposes. She is not attractive even by animie standards, her personally is terribly obsessive and annoying, she is covered in gross bite marks, and her love obsession with Sasuke is not even funny.
Even Sakura tried to kill Sasuke at one point for everything he did. Karin just forgives him and starts humpping his leg again like a lost puppy.
Karin is an embarrassment to the Uzumaki clan...I know that what harsh