Then the only other option would be the form idea, which could work honestly. I understand the the idea of it either being a mirror or a painting is a bit odd, but considering the reasoning behind it, I think it works enough for it to fit with a pokemon game (I mean we have a caterpillar that can be a moth or a butterfly with is pretty random. I mean with this it's a ghost so being a bit random makes sense).
Idk, no one else has been against it, but maybe someone can think of a more fitting way for it to work? Maybe drop the smallest form and have it as two separate 2 stage pokemon? (I mean I'd rather keep the first form but it doesn't matter).
EDIT- I'm not trying to get on your case btw, it's just that no one else minds the gender based form idea but I want it to work in a way that everyone can enjoy.
Idk, no one else has been against it, but maybe someone can think of a more fitting way for it to work? Maybe drop the smallest form and have it as two separate 2 stage pokemon? (I mean I'd rather keep the first form but it doesn't matter).
EDIT- I'm not trying to get on your case btw, it's just that no one else minds the gender based form idea but I want it to work in a way that everyone can enjoy.