Favorite in the Avatar! Hinata to be precise! We share several personality traits, but overall her attitued and willingness to help others is what makes her a character of greatness for me!
Least favorite IDK.....maybee between Ino, Sakura, or Kiba.
Ino- while her overall personality isn't anything to be upset about, I dislike the fact that she can only revolver around shintenshin no jutsu....basically she can't effectively win a one on one fight.
Kiba- about as arrogant as you get....the largest difference between him and Naruto being that Kiba's attitude just comes from being Kiba where Naruto's was a need for attention because no one liked him...the ones who actually did were either dead (parents), in charge of the village (Hiruzen), adventuring to look at women (Jiraiya), or not allowed to associate with him (Hinata). Kiba also hasn't had anyone significant die in his life to give him any degree of a reality check.
Sakura- Her personality in part I was horrible...treated Naruto like crap and then put all the work on him to save Sasuke. Part II Sakura has a good personality as she actually comes to be a real friend for Naruto. Only problem here is that instead of specializing in Genjutsu like Kakashi said she had an affinity for...she became a watered down Tsunade which was dissapointing. Also, her actions during the Kage Summit arc just made me mad....she knew how Hinata felt, but was willing to get in the way of those feelings. Then she tried to kill Sasuke on her own...this being a **** move to the people who came with her.
Despite having them in the least favorite, I understand and respect them for the talents and roles they all have....I'm just not labling them as it isn't part of the Thread!