Levi Ackerman captains the Special Operations Squad in the Scout Regiment, renowned as humanity's strongest soldier due to exceptional combat prowess. His appearance features short black undercut hair, narrow steel-blue or gray eyes with dark circles, and a deceptively youthful face. He possesses a short stature contrasting powerful musculature developed from extensive vertical maneuvering gear use. Later alterations include facial scars and the loss of two right-hand fingers from a close-range Thunder Spear explosion. Born in the Underground City to prostitute Kuchel Ackerman, who died young, Levi was raised by maternal uncle Kenny Ackerman. Kenny imparted survival skills, combat techniques, and violent behavior before abandoning him. Childhood trauma triggered his Ackerman powers during a violent confrontation over his mother's tea set, resulting in deaths. As an adult, he led a criminal life Underground with partners Furlan Church and Isabel Magnolia, using stolen omni-directional mobility gear for theft. Nicholas Lobov coerced them into an assassination plot against Survey Corps commander Erwin Smith, offering surface citizenship. Levi joined the Survey Corps under Erwin's clemency during the 23rd Expedition. Furlan and Isabel died by Titans, devastating Levi. This loss cemented his loyalty to Erwin and commitment to the Survey Corps, recognizing his initial mission's meaninglessness. His personality exhibits an obsession with cleanliness, wiping blood mid-battle yet disregarding filth when necessary. He maintains a cold, blunt demeanor with coarse humor, creating social distance. Despite this, he demonstrates profound care for human life, particularly disturbed by Titans' human origins. His leadership trusts subordinates' judgment to minimize casualties, grieving deeply for fallen comrades like Petra Ral and his original squad. Loyalty is reserved strictly for respected individuals like Erwin Smith, while showing open disdain for other authorities. Confronting enemies like Titans or human adversaries, he displays ruthless efficiency and occasional sadism, seen during Annie Leonhart's interrogation and Zeke Yeager's torture. Combat abilities stem partly from his Ackerman lineage, granting enhanced physical prowess, tactical intuition, and immunity to Titan transformation. His omni-directional mobility gear mastery includes a unique reverse-grip sword technique enabling exceptional speed and precision, cementing his military indispensability for critical solo missions. Levi upholds a philosophy of choosing paths with minimal regret, honoring fallen comrades by carrying forward their collective will. Critical decisions include prioritizing Armin Arlert over Erwin for Titan serum based on future potential, and compelling Historia Reiss to accept the monarchy for stability. His conflict with Zeke Yeager became deeply personal after Zeke caused multiple Scout deaths, including Erwin. Levi pursued Zeke relentlessly, fulfilling his promise to eliminate the Beast Titan despite severe injuries. Post-war, Levi sustained permanent injuries including leg damage, partial blindness, and finger loss, requiring wheelchair use. Attended by Gabi Braun and Falco Grice in Marley, he lives peacefully. His Ackerman abilities vanished with the Titans' disappearance, concluding his arc dedicated to honoring sacrifices through continued survival.