Small question regarding the characterization of minor characters and the use of OU/AU. How much fanon/headcanon would be considered "too much" for a character to still be considered OU? The one I'm considering apping has only appeared briefly in canon, but, since she's a Hetalia character, and thus represents an entire nation with customs, history, international policies, traditions, and stereotypes to draw upon, one could conceivably flesh her out into something playable.

What's your policy on things like this? Would she count as OU? AU? OC, even?