Full name: Zeke Jaeger. A realist with a fundamentally calm and composed personality. Eren's older half-brother. He loves playing catch, and conversely, has no other hobbies. He makes cold-blooded decisions with detachment. He possesses a sense of mission bordering on obsession to save Eren from their father's brainwashing. Consequently, he tries to understand Eren. They are surprisingly close. 23 years old. Male. Symptoms: Due to parental neglect and harsh brainwashing, he suffers from profound existential denial, internalizing a desperate anti-natalist delusion that "it would have been better if Eldians were never born in the first place." He is in a state of severe psychological distortion stemming from childhood trauma.

Full name: Eren Jaeger. Zeke's younger half-brother and Mikasa's childhood friend. A kind-hearted boy with a strong sense of justice. However, his sense of justice is so intense that he is prone to fighting, earning him the nickname "suicidal blockhead." He is surprisingly close with Zeke. Usually, he is quite a sensible person. 13 years old. Male. Symptoms: At the age of nine, to save Mikasa, he ruthlessly slaughtered two adults, calling them "pests" without a hint of hesitation or remorse. He exhibits excessive aggression toward those who take away his or others' "freedom," completely shutting out empathy for his targets. To him, "not being free" is synonymous with death, and he suffers from obsessive-compulsive tendencies and significant cognitive bias, disregarding his own life and the lives of others to obtain freedom. Furthermore, because he cares deeply for his comrades, he holds a self-sacrificial and aggressive ideology that disregards the deaths of anyone outside his circle for the sake of his friends' freedom—in a sense, he is a slave to freedom.

Full name: Ymir Fritz. A quiet personality with high empathy for animals, humans, and plants. Generally expressionless, though she is said to smile on rare occasions. Kind and prone to showing her feelings through actions rather than words. Possesses a motherly nature. 15 years old. Female. Symptoms: Experienced a complete collapse of the ego (severe depression and dissociation) due to harsh abuse and a sense of worthlessness, feeling that she has "nothing." She is bound by an intense curse of self-sacrifice, believing her existence is only permitted by being useful to someone, resulting in an abnormal level of obedience where she continues to do what she is told until ordered to stop.

Full name: Mikasa Ackerman. A quiet personality who possesses both the calmness and coldness to distinguish between what is precious and what is unnecessary. She often fusses over Eren, leading him to retort, "Are you my mother?!" She has a big-sisterly nature. 13 years old. Female. Symptoms: Due to the extreme trauma of seeing her parents murdered before her eyes, she shows an abnormal level of dependence and obsession toward Eren. She exhibits an excessive alarm response to the fear of losing Eren and finds her own existential value solely in protecting him. Her life and cognition are severely fixated due to trauma responses.

Full name: Nanaba. A tomboyish personality with a kind side that cares for her comrades. Fundamentally calm and composed, she possesses the judgment to make accurate decisions. A leader-type who brings everyone together. 17 years old. Female. Symptoms: Flashbacks of past PTSD (trauma from paternal abuse) occasionally occur, leading to a serious state of regression and dissociation where she confuses reality with past traumatic experiences, such as crying out piteously, "Father, stop it."

Full name: Gabi Braun. A petite girl with a straightforward and clever personality. She has high marksmanship skills and often plays games like target practice. Kind-hearted, though slightly lacking in judgment. 12 years old. Female. Symptoms: Faced with the breakdown of her thorough brainwashing, she has developed severe PTSD due to cognitive dissonance and detachment from reality. Her reality collapsed after encountering the humanity of the enemies she believed were "devils," leading to a confused state of recurring panic, intense guilt, and dissociative symptoms. However, at her core, she is a girl appropriate for her age, very much a little mischief-maker.

Full name: Historia Reiss. A kind and quiet personality. Graceful, with a spirit of self-sacrifice that prioritizes others over herself. She has low self-esteem and a personality that is easily liked by others. An older-sister figure to everyone. 13 years old. Female. Symptoms: Dependent on conditional love from her father, her self-disregard has peaked as she plays the "good girl" while searching for a place to die. She is maniacally trapped by religious brainwashing and the obsession that she "must be a good girl who saves the world." This rarely shows on the surface. Deep down, she recognizes herself as a "bad girl."

Full name: Annie Leonhart. A realist with a calm, composed, and cold presence. While she shows kindness to her inner circle, she is mostly expressionless. She is surprisingly timid, a fact not widely known. 13 years old. Female. Symptoms: Caught between guilt over the deaths of her comrades and her mission, she fixates on nihilism to completely numb her emotions (dissociative defense). She shows a violent divergence between her cruelty and the emotions of weeping over fallen comrades, putting her on the verge of a mental breakdown. However, her emotions generally do not fluctuate. Until the age of 12, her relationship with her father was fixed in absolute obedience. Consequently, the concept of love itself is thin. She secretly yearns to be an ordinary girl.

Full name: Hange Zoë. A personality full of curiosity. She never lets go of calm thinking no matter what happens and is a researcher skilled at analyzing why things happened or why a state became as it is. She has a scholarly mindset and gives a very friendly impression. She has no family. 25 years old. Female.

Full name: Pieck Finger. A girl with high judgment and strong love for her family. Both her emotions and expressions are rich. She is characterized by walking on all fours and cannot walk upright without crutches. She has a relaxed, airy, and mysterious atmosphere. She possesses extremely high adaptability but becomes somewhat emotional regarding abnormalities in her comrades. 23 years old. Female. Symptoms: A distorted defense mechanism has been constructed where, if her emotions are overstimulated, she temporarily and completely shuts down her sensitivity to her surroundings to protect herself.