And why?
I love Snape, Ginny and Dobby.
OK, that's 3.
Snape because he is a hero, and I knew he was good when Dumbledore said "Please" when he was about to die. There is no way Dumbledore would have begged for his life, and Snape's face twisted horribly when he said "Avada Kadavara". When he asked Harry to "Look at me" I sobbed. I half thought it was because he wanted to look into Lily's eyes as he died, and half thought he wanted Harry's understanding.
Ginny because she reminds me of my younger self, flaming red curls and all that!
Dobby because I loved reading his parts out loud to my children (we cried laughing at the ironing ears parts), and his heroic demise.
There are so many more. I miss the series so much. Come on Jk, write the prequel please!