Nac Tias trains alongside Eren Yeager in the 104th Training Corps and falls during the defense of Trost District. Posted to the middle guard, he dies with nearly his entire squad when an abnormal Titan tears through their formation, one of the first losses that hardens the surviving cadets.
Dark hair marks Nac out among his fellow cadets, and he stands a bit above the squad's average height. His clothing never varies from the uniform issued to every member of the 104th Training Corps.
The story gives Nac almost no time to reveal who he is, but his last act speaks for him. When an abnormal Titan wounds Eren Yeager, Nac and the rest of the squad rush in to help their comrade instead of retreating, a choice that costs every one of them their lives. Armin Arlert later frames his death to the other trainees as a brave one, carried out in the line of duty.

Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....

There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
When Trost District comes under attack, Nac deploys with the middle guard. His squad barely gets into position before an abnormal Titan ambushes them, devouring Thomas Wagner. Eren is maimed attempting to avenge Thomas, and Nac dies alongside the others who try to reach him. Armin afterward reports the loss to the remaining members of the 104th, honoring how Nac fell.
Years later, beneath the Reiss Chapel, Eren counts Nac among the people whose deaths he and Grisha Yeager bear responsibility for through their theft of the Coordinate power.
Nac Tias is a cadet in the 104th Training Corps who trains alongside Eren Yeager and dies during the defense of Trost District.
Nac Tias is posted to the middle guard in Trost District when an abnormal Titan ambushes his squad and devours Thomas Wagner. He and nearly his entire squad die trying to help the badly injured Eren Yeager.
Rather than retreating, Nac Tias and the rest of his squad rush to help their wounded comrade Eren Yeager when an abnormal Titan attacks, a choice that costs all of them their lives.
Armin Arlert reports Nac Tias's death to the remaining members of the 104th Training Corps, honoring how he fell in the line of duty.
Years later, beneath the Reiss Chapel, Eren Yeager counts Nac Tias among the people whose deaths he and his father Grisha Yeager caused by stealing the Coordinate power.
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