While many titans possess physical specializations—the size or the Armored’s plating—the Attack Titan’s true strength is metaphysical.
: The power first manifests in Eren Yeager during the Siege of Trost (Episode 9). In a moment of absolute despair—swallowed by a titan and surrounded by the dying—Eren’s raw anger and vow to "exterminate every last one" triggers the transformation, symbolizing a rebirth through sheer willpower. Transcendental Abilities 9 : Attack Titan
: Its holders are often consumed by an intense desire for rebellion. This isn't just a personality trait but a fundamental aspect of the titan's nature, described as "moving forward until the end". 9 : Attack Titan