Armin

Biodata

Feature	Details
Name	Armin (阿尔敏)
Species/Race	Human 1059
Gender	Male
Affiliation	104th Training Corps; later assigned to an operation squad 1030 1124
Occupation/Role	Soldier trainee; tactician and Nen user 1051 1065
Status	Active 1262
First Appearance	1025

Appearance

Armin is a thin, blond boy whose frail build leaves him at a disadvantage during physically demanding training and combat. 1030 1035

• Blond hair. 1030
• Slender, physically frail physique. 1025 1035
• Uses standard Omni-Directional Mobility Gear and blades as a trainee soldier. 1043 1066

Personality

Armin is observant, analytical, and deeply compassionate. Although he repeatedly considers himself weak or a burden, he remains committed to protecting others and finding solutions when stronger fighters cannot. He is particularly distressed by comrades' deaths and wants to stand beside Eren and Su Yang rather than remain someone who must be protected. 1044 1051

His self-doubt is persistent: he questions why others entrust important decisions to him and worries that his plans will cost lives. Nevertheless, he can act decisively under pressure, including stepping out unarmed to argue for Eren's life before hostile Garrison soldiers. 1051 1059 1136

Armin's empathy extends even to enemies. He privately expresses pity for Annie despite fearing that others will condemn him for it, and he wishes for a future in which no one around him has to be sacrificed. 1226 1227

He can also act rashly when his friends are threatened. When Eren, as the Colossal Giant, nearly harms Mikasa, Armin impulsively attempts to strike Eren's nape and is nearly killed in retaliation. 1141

Abilities & Skills

Nen Proficiency

Armin's primary Nen category is Transmutation, while he is also capable of cultivating Manifestation and Enhancement. 1065

• Creates illusions through Manifestation; the enormous trench he seemingly cut before the Garrison was an illusion. 1057 1065
• Forms a Nen barrier to protect Eren from attack. 1057
• Uses Nen to suppress injuries sufficiently to keep moving. 1044
• Enhances his physical fitness when urgency outweighs the need to conserve strength. 1065
• Infuses his blades with Nen while attempting to awaken Eren from his Titan state. 1066
• His natural stamina remains a major weakness when he does not use Nen. 1035

Tactical Planning

Armin's greatest strength is his ability to assess battlefield conditions and build plans around limited resources, terrain, and allies' strengths.

• Recognizes that a trainee's propulsion device has been reinforced with Nen, increasing its gas-efficiency and power. 1048
• Proposes an operation in which seven soldiers drop from the ceiling and simultaneously blind seven Titans by targeting their eyes. 1051
• Persuades the Garrison that Eren is an ally by pointing out that Titans attack Eren's Titan form as they would any human. 1059
• Suggests using Eren's Titan form to carry a massive boulder and seal Trost's breached gate. 1060
• Recommends a bait force to draw Titans away while an elite squad protects Eren during the gate-sealing operation. 1061
• Deduces that Eren's human body can be reached through the Titan's nape, then risks cutting into that area to wake him. 1066
• Suspects a connection between the Walls' construction and Annie's crystal, while recognizing that the theory requires evidence. 1262

Omni-Directional Mobility Gear Tactics

Armin studies the theory and practical use of Omni-Directional Mobility Gear despite struggling with physical endurance.

• Advises Eren on balance and weight distribution during the aptitude test. 1033
• Explains that underdeveloped maneuver tactics stem from the Survey Corps' former lack of support for such training. 1036 1037
• Studies Jean's gas-saving technique: a stronger initial burst followed by reliance on inertia. 1037
• Successfully kills a Titan by severing its nape while trying to rescue Mina. 1043

Equipment

• Omni-Directional Mobility Gear — Used for aerial movement, rescues, and Titan combat. 1043 1066
• Dual blades — Used against Titan napes; can be reinforced with Nen. 1043 1066
• Disguise — Worn when approaching Annie during the operation to lure her into a trap. 1200 1204

History

Early Titan Attack and Training

During the Titan attack that trapped Carla beneath a collapsed house, Armin was too frail to free her despite exerting all his strength. After Su Yang rescued Carla, Armin stayed alert and watched their surroundings while Hannes escorted the group toward the wall. 1025

Armin later moved with Eren, Mikasa, and Carla into Su Yang's villa in the second-tier district. 1029 He joined the 104th Training Corps alongside Eren, Mikasa, and Su Yang, where he answered Keith Shadis's challenge by declaring that he had come “to help humanity achieve victory.” 1030

Training exposed Armin's limitations in endurance; Reiner carried his backpack during a weighted run to prevent his elimination. Keith nevertheless recognized Armin's extraordinary theoretical ideas, and Armin developed a close interest in maneuver-gear tactics. 1035 1037

Battle of Trost

During the Battle of Trost, Armin saved Mina by cutting down a Titan approaching her, but the chaos quickly overwhelmed his squad. After witnessing Eren apparently being eaten and losing most of his comrades, he suffered survivor's guilt and severe injuries. He still chose to continue the mission, resolving to become strong enough to stand beside Eren and Su Yang. 1043 1044

He recognized that the black-haired Titan fighting other Titans was abnormal and worked with Mikasa and Connie to manage their dwindling gas supplies. 1048 1049 When their group was cornered, Armin devised the seven-person simultaneous attack plan, entrusting the most capable soldiers with the lives of everyone else. 1051

Defending Eren

After Eren emerged from his Titan body, Armin and Mikasa rescued him and brought him to safety. 1053 When the Garrison Regiment treated Eren as a hostile Titan, Armin initially used a Nen illusion to deter the soldiers, then chose a more dangerous approach: he disarmed himself, walked into their line of fire, and argued that Eren's Titan form was targeted by Titans rather than allied with them. 1056 1057 1059

Armin's argument earned Commander Pixis's attention. He then proposed sealing Trost's breached gate by having Eren carry a boulder in Titan form, giving the military a practical use for Eren's power. 1060 During the operation, Armin recognized that Eren was trapped within his Titan body and attempted to free him through the nape, ordering Mikasa to continue saving other soldiers instead of helping him. 1066

Operation-Squad Doubts

After being assigned to an operation squad, Armin questioned why others had entrusted him with such an important responsibility. Su Yang reassured him that he was not a burden and possessed the talent needed for the task. 1124 1136

Armin subsequently tried to persuade soldiers to accept Eren, the “Mysterious Giant,” as an ally. Though the soldiers ultimately refused, Armin confronted them with resolve rather than retreating into his usual timidity. 1137

Female Titan Investigation

Armin and Su Yang suspected that Annie was the Female Titan and sought Erwin and Levi's help to investigate her movements and obtain evidence. 1190 Armin later approached Annie in disguise, claiming that he needed her help concerning Eren; this was part of Erwin's plan to lure her into a trap. 1200 1204

Annie discovered the deception before the trap could succeed and transformed, leaving Armin frustrated and guilty over the operation's failure. 1205 1206 Despite Annie's actions, Armin later confided in Su Yang that he felt sorry for her and could not easily accept her suffering. 1226

Relationships

• Eren Yeager — Armin's closest friend and the person he repeatedly protects, defends, and motivates. Eren trusts Armin's judgment in life-or-death situations. 1043 1059 1062
• Su Yang — Friend, confidant, and source of reassurance. Su Yang values Armin's kindness and strategic talent, while Armin feels safe discussing his fears and hopes with him. 1136 1190 1227
• Mikasa Ackerman — Close friend and combat partner. Mikasa credits Armin's tactical mind with saving both her and Su Yang. 1051 1068
• Annie — Initially a fellow trainee, later suspected as the Female Titan. Armin helps lure her into a capture attempt but continues to feel compassion for her afterward. 1204 1206 1226
• Reiner Braun — Fellow trainee who assists Armin during endurance training and supports the seven-Titan operation. 1035 1051
• Connie Springer — Comrade who helps Armin stand and continue after his injuries during Trost. 1044
• Jean Kirstein — Fellow trainee whose maneuver-gear insights Armin studies closely. 1036 1037

Notable Quotes

“To help humanity achieve victory!” 1030

“I want to stand shoulder to shoulder with Eren and Su Yang, and survive in this world.” 1044

“I am a soldier who long ago swore to dedicate my heart to the revival of humanity! If I can lay down my life for this belief, I will die without regret.” 1059