Age: Unknown (Over 30)
Height: 160 cm (5'2")
Weight: 65 kg (143 lbs)
Affiliations: Scouting Legion

Known as humanity's most powerful soldier. He is a clean-freak. While it is said that he is blunt and unapproachable, it is noted that he has a strong respect for structure and discipline. The rumors are that he was originally part of underground crime before he became a soldier. He often comes off as unfriendly, but he cares for his team deeply and has never undervalued human life.

Later, it is revealed that he is a descendant of the legendary Ackerman clan and is related to Mikasa Ackerman