Woah woah woah, leave Kiba out of this. His nose is better thatn a ninja dogs and if he has to fight he has the twin head dog transformation.
I'd have to say that Ino is the most useless. In the team 7 vs Kakuzu and Hidan fight she did not do one single thing the entire fight. At one part she threw 1 shurikan at Kakuzu and it missed, then she was saved by Shikamaru or Kakashi.