Sorry! After I fixed Alfons' sprite, I checked XiYun's to make sure it wasn't doing this, but - here we are, I guess. This happens because the child versions of the sprites are trying to use the adult version assets.
I'm uploading a new build right now. Bright side: this build has the option to choose a family motto when you build your family crest, which was going to be released with Demo 2, but now you're getting it early.
I'm glad you're liking what you've seen of the game so far!