Hey,
I’m interested in creating a character editor with comic characters. But I need some hints on how to make eyes and mouth like in this video:
As you can see you can change the eyes and the mouth, they are animated and you can also change the color of the skin.
Would you think doing this with uv animated billboards would be a good choice?
I think that’s exactly how Nintendo did it. I would say that’s the best way to go about it.
or you could just stack multiple png images.
working on something like it myself. he’s a quick test 
@ joel: Bandwidth will be a big topic and this technique will definitely increase the filesize compared to the billboard version. 
i doubt the filesize would change much.
you would use a separate texture for the head ofcourse, and just create a few semi transparent png images.
this allows you to make allot of variations without having to make a separate texture for each.
you could either use the multiple textures in unity, or write a shader for it.
The thing is that we’ll have animations for the eyes (e.g. blink) and mouth (e.g. speak), as shown in the video. Ok, you could subdivide the head but I still prefer the other version.
Anyway, thanks for the tip, maybe it still helps finding a good solution!