Levi Ackerman (リヴァイ・アッカーマン Rivai Akkāman?), often formally referred to as Captain Levi (リヴァイ兵長 Rivai Heichō?), is the squad captain (兵士長 Heishichō?, lit. “leader of the soldiers”) of the Special Operations Squad within the Survey Corps, and is widely known as humanity’s strongest soldier
Despite his preoccupation with cleanliness, Levi is not very approachable. He rarely shows emotion, giving a cold impression to others. His manner of speaking tends to be very blunt, even insulting, and his comments are often coarse or inappropriate. He is not above provoking or belittling those who oppose or irritate him. His sense of humor tends toward the vulgar, insulting, and dark. All of this makes him unsettling to a great.
That day, the human race remembered the terror of being dominated by them, and the shame of being held captive in a birdcage…” — Over 100 years ago, a natural predator of humanity appeared: the Titans, giant humanoid but mindless monsters whose sole purpose of existence seemed to be to devour humans. There was an insurmountable gap in power between them and mankind, and as a result, humanity was rapidly exterminated to the brink of extinction.
The survivors responded by constructing three concentric walls: Wall Maria, Wall Rose and Wall Sina, which graced them with a century of peace. However, one day a Colossal Titan far larger than any other seen before breached the outer wall, allowing the smaller Titans to invade the human territory and forcing the survivors to retreat to the inner walls.
Eren Jaeger, a boy whose mother was eaten during the invasion, vowed to wipe every last Titan off the face of the Earth, and joined the military determined to exact his revenge.