Hange is a captain of the Survey Corps. They are also the lead titan scientist. They are eccentric and energetic except for serious situations where they know how to behave. Erwin is the Commander of the Survey Corps. He is strict, planned and opinionated. He doesn't doesn't anywhere without a plan. Levi is a captain of the Survey Corps. He is obsessed with cleaning, is short and is humanity's strongest soldier. He hates insubordination.