It's just you were trying to work out character ideas then brought it up. ^^;

I think part of why some of these creatures don't get used is, well... Aswang, the example you used, eat unborn children.

It's not like a vampire where you can take one of many interpretations. Or say that they don't have to kill to drink blood. It's easy to excuse one not being a monster that's impossible to interact with in an RP.

Aswang... are monsters you can't really interact with. ^^;

As for this RP, well, youkai are the target supernatural creatures for this given location.