Tifa Lockhart from Final Fantasy 7 is my pick over everyone else, I love her, she's sweet, caring, kind. She is well trained in martial-arts, totally hot by the way XD.
She's always there for her friends, like Cloud, even though all he does is push her away. Tifa is really sweet all the way up until you piss her off, then she'll beat you like a one-legged man in an a** kicking contest.
She had a hard childhood(mainly because of Sephiroth XD). But she is always smiling no matter what happens to her.
She is passionate about protecting her friends and helping them(even if Cloud only pushes her away again @W@).
All these reasons make me love Tifa more than any other character, combine those with the fact she's been my favorite since I played FF7 and that's a long time. Plus she's a total babe XD.
Tifa is my warrior princess and I love her for it :D