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
255Please respect copyright.PENANAH5jf4oFl39
Arbella255Please respect copyright.PENANAAkS4cjcSj1
Filiny255Please respect copyright.PENANAOAtXQd0Vh5
Gatyk255Please respect copyright.PENANADmaKzZH07Q