I'm working on a Shinbora on Metaknight, and I've ran into some problems.
I attempted to vertex his wings and cape, but after countless patchs, they refused to return to the position that I wanted. So I randomly decided to see if his wings allowed transparency. I erased a portion of them and replaced it in, then went to Brawl Box's previewer. Thankfully, they were indeed transparent. As you can see here:

So I made the textures that I needed on the wings and cape, while erasing out the portion that I wanted to be transparent. But in-game, the wing and cape show up black instead of transparent. As you can see here:

From my experience, when BrawlBox shows something as transparent, it should be transparent in-game. In the circumstance that transparency isn't supported, BrawlBox's previewer usually shows that texture as black or white.
Is there any way past this? Or do his wings just not support transparency or vertexing? I suppose it will end up looking fine even with this problem, but it would be much better if I could resolve it.