Jean Kirschtein

Full name: Jean Kirstein

Date of birth: April 7 (year not explicitly stated in canon, commonly assumed mid-teen at start)

Place of birth: Trost District, Wall Rose, within the Walls

Personality: Jean is blunt and brutally honest—he has no filter and speaks his mind, even when it might create conflict. Pragmatic to the bone, he initially joined the military hoping for an easier life in the Military Police, rather than risking the dangerous front-line posts. He starts out cynical and hot-headed, quick to frustration and doubtful that humanity stands a chance against the Titans. Despite this, he evolves into a thoughtful natural leader: able to assess situations objectively, empathize with friends, and take on responsibility when necessary. He deeply values ​​friendship, feels guilt when allies are lost, and although he abhors unnecessary violence, he can set aside moral qualities to protect those he cares about. Overall he's a down-to-earth realist who still learns to believe in collective purpose and duty.

Appearance: He has short, light ash-brown hair styled in a spiky undercut (with darker sides/back), intense small light-brown eyes described as having the same vicious look as Eren's. He is of average height (~175 cm / 5′8″) with a lean yet muscular build and a noticeably long face—earning him the nickname “horse face.” He usually wears the Survey Corps uniform: olive-gray button-up shirt, dark vest, dark pants, and cape when in active duty; his casual look is a white shirt, vest, dark trousers. Later in the timeline he's shown with slightly longer hair and sometimes stubble/goatee

Close friends and allies: Among his closest bonds is his trainee friend Marco Bodt—Marco's death deeply affected him. He also forms strong ties with Eren Yeager, Armin Arlert, Connie Springer, Sasha Braus, Mikasa Ackerman, and others in the 104th Training Corps and Survey Corps. He shares respect and sometimes friction with Eren and Armin, and ultimately grows to lead squads alongside them