Anyone has outside influences. They are the results of the cosmic roll of the dice: this person is born Aragon the Ranger, this person is born a prisoner in North Korea, this person is born Carlos the Dwarf. Some of these things are out of our control, but that doesn't mean that they can't be changed. A character, just like a person in real life, is a summation of her actions and feelings. Our actions and emotions are not performed against nothing, they do not arise from dust, we are in constant friction, and/or flow with our surroundings.