The black-haired soldier was a team leader in the Survey Corps. He led a team within Hange Zoë's Fourth Squad during the battle of Shiganshina District.
Appearance: This soldier was a man of average height with long, black hair which he kept parted and swept out of his eyes. When not wearing the standard Survey Corps uniform, he could usually be seen wearing a long-sleeve shirt with another short-sleeve shirt over it and long, dark pants.
Story: The officer is seen attending a meeting between Erwin Smith and the other Survey Corps officers to discuss the recent revelations involving Eren Yeager's father Grisha. As the meeting concludes and the officers depart, he suggests serving red meat to the soldiers, which the others approve. He spends what little funds the Survey Corps has remaining to buy meat from the Reeves Company for his comrades, in celebration of their impending expedition to retake Wall Maria.
Source: Black-haired soldier, available under CC BY-SA 3.0.