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
283Please respect copyright.PENANAro7C01QB6W
Arbella283Please respect copyright.PENANAI8VqLTFlKj
Filiny283Please respect copyright.PENANA3TjCrXv1LN
Gatyk283Please respect copyright.PENANAfw4GGOTFlc