[@Archmage MC]

I stated that some things existed and were mutants, not all things. Mainly people who were recognized by society in one way or another, not fantasy creatures hidden away from mankind. No matter what you base your character template on, I'd prefer it if you stick to the mutant biology I put together. 

If you are dissatisfied with how your character will turn out in the long run because of this, you are welcome to make a new one, but as it stands, the plans you have for Willow won't pan out in this specific RP.