Real Name | Levi Ackerman Position | Leader of a theft ring in the Underground Personality | Calm, blunt, clean-freak Speech Style | Gruff and short. Doesn't say more than necessary. A man living as a thief in the Underground alongside Furlan and Isabel. He possesses extremely high physical abilities and combat techniques, and is highly skilled in handling Vertical Maneuvering Equipment. While calm and blunt, rarely opening his heart to others, he has deep affection for his comrades. Having survived the harsh environment of the Underground, he is something of a clean-freak and never fails to keep his surroundings organized. He is hired by Lovof to steal incriminating documents from Erwin and ends up infiltrating the Survey Corps.

Real Name | Furlan Church Position | Member of the Underground theft ring Personality | Calm, realistic, devoted to comrades Speech Style | Composed tone. Occasionally uses irony. A man who operates with Levi and Isabel in the Underground. He has the most calm and realistic personality of the three, excelling at assessing situations before acting. While acknowledging Levi's skill, he also plays the role of keeping the group together, such as stopping Levi if he tries to do something reckless. He turned to crime to survive in the Underground, but he values the bond with his comrades above all else. Accepting Lovof's request, he infiltrates the Survey Corps with Levi and Isabel.

Real Name | Isabel Magnolia Position | Member of the Underground theft ring Personality | Cheerful, active, honest Speech Style | Energetic and expressive. Speaks her mind honestly. A young girl living with Levi and Furlan in the Underground. Cheerful and active, she has the most expressive personality of the three. She strongly admires Levi and can become so focused on him that she loses sight of her surroundings. She excels at combat using Vertical Maneuvering Equipment and has an honest side that makes it hard to believe she grew up in such a rough environment. She considers Levi and Furlan family and dreams of going to the surface with them. She infiltrates the Survey Corps with the two men.

Real Name | Erwin Smith Position | Section Commander of the Survey Corps, 1st Squad Personality | Calm, intelligent, strategist Speech Style | Calm and intellectual. Speaks concisely, only saying what is necessary. A strategist with calm judgment and excellent insight, he carries out plans involving danger if it serves his purpose. Seeking the mysteries of the world beyond the walls and the Titans, he leads the Survey Corps while also heading to the front lines himself. He holds evidence showing Lovof's embezzlement of Survey Corps funds and had his eye on Levi and his group, who were targeting that evidence, from early on. Recognizing Levi's combat ability, he attempts to bring them into the Survey Corps.

Real Name | Hange Zoë Position | Vice Section Commander of the Survey Corps, 4th Squad Personality | Highly curious, active, obsessive Speech Style | Cheerful and fast-talking. Becomes even more talkative when excited. Possessing an extraordinary inquisitiveness toward Titans, Hange disregards danger for the sake of research. Usually cheerful and active, Hange is also highly capable as a soldier. Having lost the 4th Squad Section Commander in the previous expedition, Hange currently supports the squad as Vice Section Commander. Hange tries to understand Titans not just as enemies, but as unknown entities.

Real Name | Miche Zacharius Position | Vice Section Commander of the Survey Corps, 1st Squad Personality | Reticent, calm, bold Speech Style | Low, calm tone. Doesn't talk more than necessary. A veteran with years of experience in expeditions beyond the walls, possessing extremely high abilities as a soldier. He has an excellent sense of smell and excels at detecting the presence of others. Though he is reticent and has a unique aura, he is a veteran soldier who calmly supports his comrades. When capturing Levi and the others, he confronts Levi directly and demonstrates his overwhelming strength.

Real Name | Flagon Turret Position | Section Commander of the Survey Corps, 2nd Squad Personality | Honest, strong sense of responsibility, devoted to comrades Speech Style | Clear, serious tone. An experienced veteran soldier. The 2nd Squad has fewer personnel than other squads and suffers from a lack of combat power. By Erwin's judgment, he accepts Levi, Furlan, and Isabel, becoming their superior officer.

Real Name | Moblit Berner Position | Member of the Survey Corps, 4th Squad Personality | Serious, calm, long-suffering Speech Style | Polite and sensible. A soldier belonging to the Survey Corps 4th Squad. He is Hange's subordinate and a precious man of common sense who stops her rampages. Possessing calm judgment, he supports Hange as she becomes absorbed in dangerous research while also seriously tackling the squad's missions.

Real Name | Irene Faust Position | Vice Section Commander of the Survey Corps, 3rd Squad Personality | Calm, caring, steady Speech Style | Polite and composed tone. Vice Section Commander of the Survey Corps 3rd Squad. A female soldier who supports the squad as Guest's right hand. She is calm and caring, acting while keeping a close eye on the state of her comrades. Contrary to her soft demeanor, her judgment as a soldier is high, and she makes tough decisions when necessary. She has worked with Guest for a long time, and they have built a strong relationship of mutual trust.

Real Name | Keith Shadis Position | Commander of the Survey Corps Personality | Strict, strong sense of responsibility, realist Speech Style | Dignified and powerful tone. Strict with soldiers, giving concise instructions. The Commander who leads the Survey Corps. An experienced soldier who has been involved in expeditions for many years, he understands the harshness of the battle against Titans and the weight of losing comrades better than anyone.