Attack on Titan Codexery

Annie Leonhart

The comrade who turned out to be an enemy, sealing herself in crystal to survive.

Annie Leonhart is introduced as a fellow military comrade who serves in the Survey Corps alongside Eren Yeager, Mikasa Ackerman, and Armin Arlert. While initially presented as a stoic recruit with exceptional combat skills, she harbors a devastating secret: she is one of the Nine Titans, specifically the sentient Female Titan. Her infiltration of humanity's defenses was part of a larger mission to reclaim the Founding Titan for her people outside the walls. This deception drives one of the series' most pivotal conflicts, shattering trust within the ranks when her true nature is finally revealed during an expedition between the walls.

Character
Annie Leonhart
Titan Form
Female Titan
Affiliation
Survey Corps (Cover), Marleyan Warrior Candidate
Status
Preserved in Crystal

Lore & Background

Annie's secret was exposed following a confrontation with Eren and his companions during an expedition into the forest between the walls. There, they encountered the sentient Female Titan, which was later revealed to be Annie herself. After a fierce battle where she fought to protect her identity, Annie found herself cornered by Eren and his friends. In a desperate move to avoid capture or death, she utilized her unique ability as a Titan Shifter: hardening certain parts of her body at will. She encased her entire form in crystal, creating an impenetrable barrier that left her trapped in a state of suspended animation. This act occurred after she was defeated and put into custody by the Survey Corps, marking the end of her active infiltration on Paradis Island.

In Their Own Story

During the expedition between the walls, Eren and his companions encountered the sentient Female Titan, which engaged them in combat. The battle revealed that the Titan's true identity was their fellow military comrade, Annie Leonhart. Following this revelation, Eren fought and defeated her. Unable to overcome the odds or escape without being captured by the Survey Corps, Annie made a fateful decision. She activated her hardening ability, encasing herself in crystal. This self-imprisonment left her preserved within the crystal structure, effectively removing her from the immediate conflict while she awaited a rescue that had not yet occurred.

Reader's Guide

Annie Leonhart is identified as the sentient Female Titan, one of the Nine Titans known for their ability to shift between human and Titan form. As a Pure Titan created by injecting Eldians with Titan spinal fluid, she possesses the specific power to harden parts of her body at will, making them nearly impenetrable. Her transformation was triggered after being revealed as an enemy combatant during the expedition in the forest between the walls. In human form, she operated within the Survey Corps under the guise of a loyal soldier before revealing herself as Annie Leonhart. Upon defeat by Eren Yeager and his companions, she utilized her hardening ability to encase herself in crystal, resulting in her current status of being put in custody while preserved in this crystalline state.

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