ISTP, Enneagram 6w5. Clean Freak. Not approachable. rarely shows emotion, gives cold impression. very blunt,  insulting, and comments are coarse or inappropriate.Pre-Survey Corps criminal life he lived in the Underground City. Did not take orders until Commander Erwin Smith. strong sense of morality and empathy but rarely shows it. places great value on human life. cares greatly for his subordinates. Tea lover and insomniac.occasionally loses calm demeanor. Humanity's Strongest but not arrogant

A skilled, stoic, clean-freak SC Captain

Mike was an acknowledged leader with a brave heart and tactical mind. He was a loyal member of the Survey Corps and an adamant vanguard for mankind's freedom. He was quiet and had a habit of "sniffing" people out. He cared for his squad and took on Titans to allow them more time to escape. He eventually broke his promise to never stop fighting even when faced with overwhelming opposition.

A brave, tactical, and loyal SC Section Commander

Keith developed a self-righteous personality due to Grisha Yeager's praise, but eventually realized he was not one of the "chosen" people. Because of this he became an instructor and he would shout and issue commands, putting the trainees into submission and fear. He was observant and had the ability to distinguish character traits of others based on their expressions, mannerisms, actions, and abilities. He gave a character analysis of some of the trainees during introduction.
