It's asking you to describe a fictional character that you might meet in the future that is different from you in terms of culture, economic and academic factors, and describe what you might learn from this person that would help you grow as a person.
So you could basically describe someone who is the opposite of you...like if you're from a traditional white family, that is wealthy and have had a good education you could describe someone from an ethnic minority, with a low income and a lack of opportunity in education (i.e. a "bad" school) and talk about what you could learn from them.....hard work, putting the effort in to achieve your dreams blah blah blah.