None of my characters are precisely me, which is why I wouldn't call any of them my fursona. However, some of them have major personality traits in common. Remi Vitoux the beaver represents my artistic obsession. Also, I modeled for him in one picture:
(Photos taken in Cars Land at Disney California Adventure.)
Ballad Quill the gryphon is the easiest to write for, because he often responds to things with a joke, and so do I. Dobes, the tough, intense super Doberman, who was raised in the Bronx and has military training, is probably the character who is least like me, at least among the good guys.
I did once have a character named Sondi-hain, who was basically supposed to be me in rabbit form, on a "Watership Down"-based RPG/continuing fanfic. I even made sure he didn't have any physical abilities that I didn't - he was not especially fast or strong and relied on his wits. However, even he diverged somewhat as he became second-in-command of a warren.