Simon

-Cool and suave when in humanoid form. A bit of a temper in his "feral" (hooved) form. Has ruined far too many outfits when impulsively switching to the latter to scare/get back at someone, much to his displeasure.

-Not actually all that rich. Just good at.. acquiring things. Whether he strikes under the table deals or people are simply intimidated by his reputation and give him things, few are sure.

-Absent-minded, a bit of a klutz despite the air he tries to put on.

-Fiercely loyal if you can actually get him to like you.  

-While not routinely altruistic, he doesn't take kindly to others picking on/taking advantage of others weaker or worse off than them. Not at ALL afraid to step in to correct this.