Eren Kruger

A Marleyan public security official. He was slacking off with Gross near the airship landing site when they discovered young Grisha and Fay, who had left the walls without permission to see the airship. He punished Grisha but then stopped him from leaving immediately, allowing him to see the airship. He frequently appeared with Gross, and when the existence of the "Eldian Restorationists" was exposed to Marley, he captured them and took them to Paradis Island.

His true identity was "The Owl," an informant for the "Eldian Restorationists" who had infiltrated the Marleyan government, and an Eldian with the power of the "Attack Titan." The remnants of the royal family who stayed on the continent became a revolutionary army, and his father was a member who survived while his family was burned alive. Since then, he vowed revenge against Marley and the restoration of Eldia. While providing weapons, funds, and information to the "Eldian Restorationists," he did not hesitate to use any means necessary for his goals, torturing many of his compatriots and comrades and sending them to Paradis Island to be turned into Titans to conceal his identity.

During the "paradise send-off," he betrayed Gross, transformed into a Titan, and killed all the other officials. He revealed his true identity and the fact that his death was near due to "Ymir's Curse" to Grisha, allowing himself to be devoured to pass on the power of the "Attack Titan" to him. Just before his death, he muttered the names of future individuals, "Mikasa and Armin," who did not exist in this era.

In the final battle, he appeared as one of the nine Titans resurrected by the Founding Titan, in the form of the "Attack Titan." Initially, he was a puppet of Eren and opposed Armin and the others, but he responded to Zeke's feelings, who was persuaded by Armin upon reaching the coordinate, and cooperated in the defeat of the Founding Titan.