Nina of the Forest Kingdom, a hunter of unidentifiable race. She has mammalian ears, and white blonde hair with deeply tanned olive skin. It's not supposed to look like a Barbie girl. Her eyes are a dull golden/green, and she makes a living putting food on the Forest Kingdom royalty's table. Her specialty is hunting fluttergnats. She can be a little coarse if you don't understand her mannerisms, and has a tendency to laugh when things get awkward. She views Finn and Jake as an obstacle in her line of work.
EDIT: Also, why the hell do so many of these OCs magically have Finn having a crush on them? Psh... That's silly