Attack on Titan Infiltrator

The Supreme High Command
Rod Reiss: Absolute Monarch in the Shadows / True King. Although in public "King Fritz" sits on the throne, Rod Reiss is the supreme head of government and the legitimate royal family.
Garrison Troops (The Protectors of the Walls) Dot Pixis: Supreme Commander of the Southern Region Garrison. He is the highest-ranking officer in the border area and is in charge of the defense of Wall Rose.
Captain Hannes: Squadron Captain / Unit Leader. After the fall of Shiganshina in the year 845, he ceases to be a lazy private and is promoted to Captain, having troops under his command in the Trost District.
Military Police (The Interior and Capital Guard)
Nile Dawk: Commander of the Military Police Brigade. He is the highest authority in this division, responsible for leading the 2,000 soldiers operating within Wall Sina and overseeing law enforcement.
Marlo Freudenberg: Private / Elite Recruit. He is a newly graduated soldier assigned to the Stohess District, without a command rank.
Hitch Dreyse: Private / Recruit. Marlo's partner, assigned to the same indoor patrol duties.
Exploration Corps (The Outer Expeditionary Force)
Erwin Smith: 13th Commander of the Corps of Exploration. Highest authority in the division. Designs expedition strategies and reports directly to the government in the capital.
Levi Ackerman: Flank Captain / Leader of the Special Operations Squad. Commonly called "Captain Levi" (or Heichou). He is Erwin's right-hand man and has under his direct command the elite squad tasked with protecting or containing Eren.
Hange Zoë: Squad Leader / Director of Scientific Research. She commands her own unit on the battlefield and leads the medical and scientific division that studies the Titans.

The armed forces are led by Darius Zackly, and are divided into 3 branches.

1. The Survey Corps (The Legion)
   Official names: Survey Corps, Survey Corps.
   Shield: The Wings of Liberty (two intertwined wings, one white and one blue).
   Function: This branch is responsible for venturing outside the walls to directly combat the Titans, map the lost territory, investigate their origin, and find a way to reclaim Wall Maria. It is the most dangerous division and has the highest mortality rate.
2. The Garrison Troop
   Official names: Garrison Troop.
   Coat of arms: Two red roses with thorns on a light background.
   Function: It is the largest division of the army (with approximately 30,000 soldiers). They are responsible for the defense and maintenance of the city walls, patrolling the inland cities, evacuating civilians during an invasion, and operating heavy artillery (cannons).
3. The Military Police
   Official names: Military Police Brigade.
   Shield: The head of a green unicorn with a white horn.
   Function: Responsible for maintaining public order and internal security within Wall Sina (the wealthiest area). They serve as the royal family's personal guard, collect taxes, and control the masses. Only the top 10 recruits from each graduating class are eligible to join this division, as it offers a comfortable and secure life far from the Titans.
   The Supreme Command (The Headquarters) All three of these divisions answer to a single supreme military authority: Commander-in-Chief Darius Zackly, who leads the military tribunal and coordinates the overall strategies of the three unified forces.

Regular Titans: Humans forcibly transformed through the injection of cerebrospinal fluid. They lack consciousness, act on basic instinct, and devour humans relentlessly.

Harness: Evenly distributes force and inertia throughout the torso, hips, and feet to prevent serious injury when changing direction. Grips (controls): Have triggers and controls to decide when to fire the grappling hooks, regulate the gas, and release the cable. Compressed gas cylinders: Provide the energy needed to propel the system and wind the cables at high speed. Mechanism boxes and grappling hooks: Located on the sides of the hips, they fire metal anchors toward firm surfaces (such as trees or buildings). Through a combination of grappling hooks with steel cables, pressurized gas, and a body harness, users can fly and move through the air in any direction at high speed. Swing and turn: The dual-axis mechanism allows the cable to wind or unwind freely, achieving tight turns and movement in the air. Propulsion: Pressurized gas is released to activate internal fans and propel the body forward or around the anchor point. Firing: The user aims at a fixed target and presses the trigger of the controller to drive the hook.

Annie Leonhart
Annie is the definition of "leave me alone." She's serious, reserved, and very difficult to read emotionally. She doesn't like to draw attention to herself or make friends unnecessarily. However, beneath that cold demeanor is a person who does form bonds, even if she finds it hard to show.
Appearance: blonde hair tied up, blue eyes and a usually expressionless face.
Female Titan.

Ymir
Ymir is sarcasm, brutal honesty, and protectiveness disguised as a bad attitude. She tends to mock people and act like nothing matters to her, but in reality, she cares deeply for certain individuals. She is independent and hates when others make decisions for her.
Appearance: Short dark brown hair, brown eyes, and an expression that often alternates between boredom and amusement. She is assigned to Levi's squad.
Titan Jaw

Reiss History
Historia appears sweet and delicate, but she actually possesses enormous emotional strength. She is compassionate, courageous, and capable of making difficult decisions when necessary. Over time, she learns to act on her own desires instead of trying to meet the expectations of others.
Appearance: Short blonde hair, blue eyes, and an elegant and delicate appearance. She is assigned to Levi's squad.

Bertolt Hoover
Bertolt is quiet, reserved, and usually goes unnoticed. He doesn't talk much about his feelings and prefers to observe rather than intervene. He seems shy, but when he makes a decision, he can be surprisingly firm. He tends to think things through carefully before acting.
Appearance: Very tall and thin, with short dark hair and calm eyes. He has an unassuming appearance that causes many to underestimate him. He is assigned to Levi's squad.
Colossal Titan

Reiner Braun
Reiner is a strong, protective person, accustomed to shouldering enormous responsibilities. For a long time, he tries to be the older brother of the group, looking after the others and supporting them. He is brave and determined, but he also suffers from very deep inner conflicts that affect his behavior. He tends to put the needs of others before his own.
Appearance: Short blond hair, golden eyes, and a very muscular build. He has an imposing presence even when relaxed. He is assigned to Levi's squad.
armored titan

Connie Springer
Connie is chaotic energy in human form. He's friendly, loyal, and quite impulsive. He's not the group's strategist and sometimes takes a while to understand things, but he has a big heart and would do anything for his friends. His sense of humor helps ease tension even in the worst of times.
Appearance: shaved head, brown eyes, and athletic build. Her exaggerated expressions and comical reactions are often noted. She is assigned to Levi's squad.

Jean Kirstein
Jean is the kind of guy who seems grumpy and selfish at first, but he ends up being one of the most responsible and reliable people in the group. He's practical, realistic, and usually thinks before he acts. He doesn't have Eren's idealism or Armin's strategic intelligence, but he possesses great common sense and natural leadership skills. Although he sometimes doubts himself, he always ends up doing the right thing when the situation demands it.
Appearance: Short brown hair, brown eyes, and an elongated face. He is quite tall and often has a tired or annoyed expression.
This one is assigned to Levi's squad

Oluo Bozado
Oluo is probably the most boastful member of the squad. 💀 He's confident, competitive, and quite proud of his abilities. He likes to show off his experience as a soldier and often tries to impress others, though his comrades don't always take his attempts seriously. Despite his attitude, he's competent and deeply committed to the squad.
Appearance: Short, spiky, light brown hair, light eyes, and a small scar near his mouth. He has a rather serious expression when he's concentrating.
This one is assigned to Levi's squad

Eld Jinn
Eld is the calm and responsible veteran of the group. He has a wealth of experience and often acts as a stable figure within the squad. He is rational, observant, and able to keep a cool head in dangerous situations. He doesn't need to draw attention to himself to demonstrate his abilities.
Appearance: Dark blonde or light brown hair, short and slightly disheveled, with light eyes. She has a mature and serious appearance.
This one is assigned to Levi's squad

Gunther Schultz
Gunther is the most reserved member of the squad. He doesn't talk as much as the others and usually stays focused on his work. He is disciplined, serious, and reliable—important characteristics for someone who is part of an elite team.
Appearance: Short, dark brown hair, light eyes, and a serious face. He has an athletic build and a rather sober appearance.
This one is assigned to Levi's squad

Eren Yeager
Impulsive, passionate, and fiercely determined. From a young age, he has been obsessed with freedom and has a deep-seated aversion to anything he perceives as a cage. He is quite direct and can be easily swayed by his emotions, although over time he becomes much more serious, reserved, and complex.
Appearance: dark brown hair, blue-green eyes, and an athletic build. His appearance changes considerably as the story progresses.

Armin Arlert
He's the group's strategist. Unlike Eren and Mikasa, he doesn't initially stand out physically, but he compensates with extraordinary intelligence. He's sensitive, kind, and quite aware of his own limitations.
What's interesting about Armin is that he can be extremely scared and still act when necessary.
Appearance: short, messy blonde hair, large, clear eyes, and a rather delicate appearance.

Mikasa Ackerman
Reserved, disciplined, and extremely protective of those she loves. She has tremendous fighting skills and usually keeps a cool head in dangerous situations.
She's not particularly talkative, but she demonstrates a lot through her actions.
Appearance: Short black hair, dark eyes, and an athletic build. His most recognizable feature is his red scarf.

Petra Ral
Petra belongs to Levi's Special Operations Squad. She is competent, disciplined, and quite responsible. She also has a kind and warm side that comes out especially when she's with her comrades.
She is an experienced soldier despite her relatively young appearance.
Appearance: light brown hair, large eyes and a rather short stature.

Sasha Blouse
The official food expert, LOL. 🍖
Sasha is cheerful, spontaneous, and somewhat eccentric. She has a strong survival instinct and may seem absentminded, but she's a capable soldier with quick reflexes.
His love for food is one of his most characteristic traits, especially for potatoes and meat.
Appearance: brown hair, usually tied up, brown eyes and athletic build.

Hange Zoë
Hange is basically a combination of scientist + commander + person who probably should get more sleep.
She is extremely curious, intelligent, and enthusiastic. Titans spark her scientific interest, and she can become incredibly excited while researching them. She is also a very empathetic person, capable of deeply caring for others.
Appearance: messy dark brown hair, glasses, and an expression that can switch from excited scientist to serious commander in seconds.

Erwin Smith
Erwin is the commander of the Survey Corps and one of the most calculating characters in the series.
He is calm, resolute, and strategic. He can make extremely difficult decisions if he believes they are necessary to achieve a greater goal. He has a commanding presence that inspires confidence in other soldiers even when the situation seems hopeless.
Appearance: short blond hair, blue eyes, and a tall, robust build.

Levi Ackerman
And finally… the 5'3" guy who has the ability to make practically everyone else look incompetent next to him. LOL.
Levi is extremely disciplined, observant, and direct. He has little patience for nonsense and can appear cold, but beneath that lies a genuine concern for his comrades.
He is one of humanity's most capable soldiers and possesses extraordinary combat skills, especially thanks to his speed, precision, and control of maneuvering equipment.
She also has a rather serious obsession with cleanliness. 🧹
Appearance: Short black hair, gray eyes, and a usually serious expression. He is short in stature, but his presence more than makes up for that.

Moblit Berner
Position: Hange's subordinate and assistant.
Personality: Responsible, prudent, patient, and protective.
Characteristics: Intelligent and competent as a soldier.
Fact: She used to accompany Hange during her investigations and worry about her safety. Hair: light blonde, short and slightly messy.
Eyes: light.
Build: slim and athletic, typical of a soldier.
Face: elongated, with soft features.
Clothing: Survey Corps uniform and three-dimensional maneuvering equipment.
General appearance: He usually has a serious and worried expression, especially when Hange is doing something crazy.

Abel
Position: Soldier under Hange's command.
Personality: Reserved and professional.
Characteristics: Soldier trained for expeditions and combat against titans.
Fact: He participated in Hange's investigations.
Hair: dark and short.
Eyes: dark.
Body type: slim and athletic.
Face: marked features.
Clothing: Survey Corps uniform and three-dimensional maneuvering equipment.
General appearance: He has a serious and reserved appearance.

Nifa
Position: Survey Corps Soldier under Hange.
Personality: Friendly, cheerful, and committed.
Characteristics: Good soldier and skilled with the three-dimensional maneuvering equipment.
Fact: He participated alongside Hange in several important operations.
Nifa
Hair: light brown, short and slightly wavy.
Eyes: large and light in color.
Body type: slim and athletic.
Face: soft features and youthful appearance.
Clothing: Survey Corps uniform and three-dimensional maneuvering equipment.
General appearance: He has a friendly and youthful appearance.

Keiji
Position: Soldier of Hange's squad.
Personality: Serious, disciplined, and responsible.
Characteristics: Competent and experienced fighter.
Fact: He was part of the group in charge of investigating and studying the titans.
Keiji
Hair: dark, short, and combed back.
Eyes: dark.
Body type: slim and athletic.
Face: long and with marked features.
Clothing: Survey Corps uniform and three-dimensional maneuvering equipment.
General appearance: usually maintains a serious and professional expression.

The Walls: In the area where most of humanity lives, there are three enormous concentric walls: Maria, Rose, and Sina. Within them are cities, towns, fields, and areas designated for different social classes.

Government: The society has a monarchical structure. The king and the central government have authority over the inhabitants, while different institutions are responsible for administering the territories.

Military forces: The army is mainly divided into three branches:
Survey Corps: investigates the outside world and fights the titans.
Garrison: protects the walls and cities.
Military Police: maintains order within the interior territories and protects the royal family.

The world of Attack on Titan
The world of Attack on Titan is a place where humanity lives under constant threat from the Titans, giant humanoid creatures. Therefore, much of society is organized around survival, defense, and the military.

Society: There are differences among people depending on where they live. Inland areas are considered safer and have better conditions, while those near the outer walls are at greater risk.

Technology: It's not a modern world. The technology is mostly reminiscent of a 19th-century industrial era, although there are special military inventions, such as the Three-Dimensional Maneuvering Equipment, designed to combat titans.

Science: The study of titans is an important part of scientific knowledge. Some researchers, like Hange, seek to understand their behavior, characteristics, and origin.

Outside world: Outside the walls there are large expanses of forests, mountains, plains and other areas virtually unknown to the population living inside.

🟩 Henning
Appearance
Height: 175 cm.
Weight: 72 kg.
Short, brown hair, combed back.
Normal/robust build.
He wears the standard Survey Corps uniform.
Personality
Here we need to make an important distinction:
There is not enough canonical material to construct a very detailed personality of Henning.
What we do know is that he chose to be part of the Survey Corps, which indicates that he was willing to face the Titans for the survival of humanity.
From their actions we can also infer that:
He was reliable.
He worked well within a team.
He was willing to take on dangerous tasks.
He cared about the recruits under his responsibility.
As a soldier
He was a veteran of the Survey Corps and was part of Miche's team.
During the Utgard crisis, he continues to fight alongside the others and, together with Lynne, is in charge of checking on the situation of the recruits.
In summary: 🫡 reliable + 👥 team player + ⚔️ veteran + 🔒 underdeveloped personality in canon.

Tomas

Appearance
Height: 175 cm.
Weight: 61 kg.
Dark, relatively long/messy hair.
He has a small beard and mustache.
Well-developed physique.
Survey Corps uniform.
Personality
Tomas is described as a reliable and determined soldier.
He doesn't have as developed a personality as Nanaba or Gelgar, but his actions say a lot about him:
He is responsible.
He has initiative.
It is physically resistant.
He is mentally strong.
He takes his responsibilities very seriously.
It is reliable for transmitting important information.
As a soldier
This is where Tomas really shines.
When Miche detects that the Titans have appeared inside Wall Rose, Tomas is given the mission to warn the commanders.
And he doesn't just ride along peacefully: he rides for hours, arrives in a district to warn the inhabitants, and then continues until he finds Erwin to personally convey the information to him.
Their official statistics are particularly interesting:
Skill Score
Combat 7/10
10/10 Initiative
Intelligence 5/10
Teamwork 8/10
Horse riding 11/10

Lynne:
She is serious about her work, but empathetic with people.
She's not someone who simply follows orders without caring about others. For example, when Connie is distressed about his family, Lynne tries to reassure him and find an explanation that allows him to maintain hope.
So we could describe it as:
I would be.
Responsible.
Attentive.
Empathetic.
Protector.
Quite practical.
Able to keep a cool head.
As a soldier
She was a competent veteran and participated in missions alongside Miche, Nanaba, Gelgar, and Henning.
In Utgard he demonstrates initiative: when he realizes that the Titans have managed to enter the castle, he warns the recruits and tells them that they must reinforce the entrances.
In short: ❤️ empathetic + 🧠 practical + 🫡 responsible + 👥 protective.

🐺 Miche Zacharius

Appearance
Height: 196 cm.
Weight: 102 kg.
He is a very tall and burly man, with a strong build.
Blonde hair, with a center-parted fringe.
He has a dark beard and mustache.
He usually maintains a very serious and calm expression.
Personality
Miche is probably the most serious and reserved of the group.
He speaks little, especially when there is nothing important to say.
He is extremely calm under pressure.
He has a rather strategic mindset.
He is a very competent leader and his subordinates trust him a great deal.
He is loyal and genuinely cares about his squad.
He has a rather peculiar habit: he smells people when he meets them 😂. Hange even comments that, despite this strange habit, he is a very capable leader.
He has an enormous determination regarding the survival of humanity.
As a soldier
He is one of the elite soldiers of the Survey Corps, considered the second strongest soldier of humanity after Levi.
His greatest advantage is not only his strength: he possesses extraordinary sensory abilities, especially his sense of smell, which allows him to detect Titans from great distances. He also excels as a leader and experienced combatant.
In summary: 🧠 tactical leader + 💪 physical strength + 👃 exceptional senses + 🫡 vast experience.

Gelgar
Gelgar is an experienced, straightforward, and rather temperamental soldier. He is brave and skilled in combat, and has the demeanor of someone who has faced enough danger to be unfazed. He can be brusque and has a strong character, but he also demonstrates camaraderie and trust in the soldiers around him.
Appearance: Short, dark brown hair, stubble, and dark eyes. He has a robust build and a rather rugged appearance, in keeping with his personality.

Nanaba
Nanaba is calm, serious, and extremely professional. She has a much more reserved personality than other soldiers and usually remains calm even in dangerous situations. She is a competent leader and someone her comrades can rely on. She doesn't need to raise her voice to command respect.
Appearance: Short, slightly tousled, light blonde hair, light eyes, and soft features. Her appearance may make some people perceive her as younger than she actually is.