Aha! After much time examining, shuffling and watching the episodes constantly in analysis, this chart is finally done! In celebration of The Legend of Korra, here ya go!
First step is to take the Myers-Briggs Type Indicator (MBTi) test and find out your result. Then you correspond your result to the chart and see which character you are most like from the show based on it! The results are not always going to be 100% accurate to the character and you may not be accurate to the result sometimes, but that's just how things go. The majority of the time, they are rather accurate.
Tell me what you think of it and just know that I'm not changing anything
EDIT 1: mypersonality.info provides a very nice test for you to do. I'm tired of people asking where to take the test... It requires a login, but it's free and one time only.