The personality of someone from Cheyenne, Wyoming will differ greatly from a character who grew up in Hell’s Kitchen, New York City, and both of these people will experience the world differently than someone who grew up in Seoul, South Korea.
Your characters will, in some way or another, be defined by their setting. The personality of someone from Cheyenne, Wyoming will differ greatly from a character who grew up in Hell’s Kitchen, New York City, and both of these people will experience the world differently than someone who grew up in Seoul, South Korea. Setting implies culture, worldview, and language, even if your character tries to push back against their upbringing.