I messed around with a character maker and attempted to make the characters in the Book of Human. It's not completely accurate but I think it conveys the general idea of their appearance.
Armun
123Please respect copyright.PENANA0VUkEc8dgL
Arbella123Please respect copyright.PENANAP5GSaH7Oav
Filiny123Please respect copyright.PENANAyMyy9ycNm9
Gatyk123Please respect copyright.PENANA4PJQ2nrQkr