Therefore, there is an extremely rare mutation among goblins, or rather, it is not a mutation, but rather the appearance that the goblin race should have.
City goblins, integrated into the grand event of human-like civilization, become city residents, engage in high-intelligence professions such as merchants or inventors, or serve as servants and stewards for nobles with special preferences.
This is the most special aspect of goblins; they are the only race among all the demons in the wild that can enter human civilization as a member of the Wisdom Race.
Because the original goblins were one of the creators of civilization. This is what Noah, as the Ancestor Dragon, found in the oldest memories regarding goblins.