So far, Gaara, Naruto, and Sasuke are my favorites. I'm not very far into the series to be honest, so my opinions might change over time. I also love Kakashi, Shikamaru, Hinata, Tenten, Itachi, Lee, Sakura, Tsunade, Iruka and Haku.
Gaara for sure!~ <33
A lot of people started to like him when his backstory was revealed or when he changed for the better, but I have LOVED him from the very beginning! The moment he appeared, I knew he was gonna be my favorite. Even back when he was a crazy little psycho, I found him to be... cute! ^.^
No one (or thing) could ever take his place in any way, shape, or form~ ☆