Hmmm... A few issues, JNathan. Vegeta Gothax has some issues in his sign-up.
Firstly, the history kind of strikes me as... Cliche. As for the hunters, I imagine they would have just shot all of the wolves in the first place, rather than picking one up and leaving with it. I also imagine they wouldn't go as far as killing civilians. You might want to rework your intro story into something more... Believable, for lack of a better word.
Second, the personality. Why would it be different when he changes form? The human form, from the wolf's perspective, is no more than a tangible disguise. On that same note, even in human form, other wolves will see right through the disguises. The personality also seems to contradict itself a bit, in that he is caring yet ruthless. On top of changing this section, you may want to add to it some more. One inclusion might be how he interacts with people and other wolves.
Lastly, I know I don't require Wolf's Rain knowledge for players to join, but if you're confused on how the world of Wolf's Rain works exactly, you may want to watch a few episodes or read a few chapters of it. That is merely a suggestion though.