Nac Tias

Nac Tias (ナック・ティアス) was a member of the 104th Training Corps who fought in the battle for Trost District.

Appearance
Nac Tias had dark brown hair, which was styled back in a somewhat spiky pattern. He had medium brown eyes and was somewhat tall when compared to the average of the other trainees from his squad. He wore the typical uniform of a member of the 104th Training Corps with a gray shirt underneath.

Personality
Nac appeared to be a warm-hearted person who cared a lot about his friends, which he did not seem to have much trouble making.

104th Training Corps arc
Nac Tias is among the recruits of the 104th Training Corps. He is seen briefly talking to Jean Kirstein.

Battle of Trost District arc
Nac Tias graduates training as a member of the 104th Training Corps. After the second attack by the Colossus Titan, he is assigned to the middle guard including Eren Yeager and Armin Arlert in the Trost District. Shortly after the squad's deployment, the group is attacked by an abnormal Titan, which results in the death of Thomas Wagner.

This causes Eren to attack the Titan in a rage, which in turn causes his squad to pursue and try to help him. Another Titan jumps up and bites Eren's leg off and when Nac and Mylius Zeramuski are distracted, Mylius is grabbed by a Titan, which then eats him. Caught by another Titan, Nac is then squeezed in its hand so hard in such a way that his lower body explodes. Armin would later report his demise to the remaining members of the 104th Training Corps, saying he died valiantly in the line of duty.

His death would later be avenged by Eren in his Titan form, who kills the Titan responsible for Nac's demise by punching and repeatedly stomping it into the ground after it attempts to kill Mikasa.

The Uprising arc
While speaking to Historia under the Reiss chapel, Eren mentions Nac as being among the victims he and Grisha Yeager are responsible for killing by stealing the Coordinate power.

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