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
116Please respect copyright.PENANAmxOL8BkSvl
Arbella116Please respect copyright.PENANAZPc9RiHuHf
Filiny116Please respect copyright.PENANAzRpqOpxRJo
Gatyk116Please respect copyright.PENANAwafbraWHDD