Cause gon has the worst face presets in all the game gon fem in particular her idle pose break if not every costume, to get a proper preset to make a face look ok is a challenge, censorship in the west destroyed gons image
all classes uses the same skeleton is just the skin ( the race ) that is different
tbh bns 2 did a great job with the gon race is a shame that is a mobile and a tab target game