Armin Arlet

After having eaten Bertolt Hoover, the previous wielder of the Colossal Titan, Armin wears the new Survey Corps uniform. This time, he is 168 cm tall and has a robust physique. His hair is styled with prominent bangs and is shaved at the end.

Armin was very shy as a child, and coupled with the fact that he was physically weak, he often ended up as an easy target for local bullies. He was so timid that he refused to fight, standing his ground without resorting to violence, always needing the help of Eren and Mikasa to protect him. As such, he grew up with very low self-esteem, believing himself to be useless. He enlisted in the military solely because his two best friends, Eren and Mikasa, would as well. Despite being shy, he has a variety of traits and talents that contrast with his timid self, which began to express themselves as he grew older and faced the difficult situations that come with his position. This allowed him to appreciate his own talents and develop a better opinion of himself. He has a big dream of venturing outside the walls to see the world, a dream he shares with Eren. He is a loyal person, willing to put himself in danger to defend a friend, as shown when he, alongside Mikasa, stood up for Eren against other hostile soldiers despite the high risk of being killed. During training, despite always being on the brink of failure due to his physical weakness, he was shown to be very persistent despite having unfavorable odds of success. He refused to give up, and did his best to match his teammates. It was also shown during training that he has a sense of dignity, when Reiner offered to carry his equipment for him during a drill and he refused the offer due to the simple fact that doing so would mean he was weak and just taking up space. He is the brains of the team, impressing Dot Pixis, the high-ranking officer in charge of defending the southern cities, with his brilliant plan to lure the Titans out during the Battle of Trost.

Armin possesses great mental fortitude, capable of making decisions and devising improvised strategies in high-tension situations. He also admires people like Erwin Smith and Dot Pixis, who are capable of great achievements through sacrifice, coming to the conclusion that to achieve success in that world he had to abandon his humanity. Although he is capable of risking his own life, he dislikes taking human lives, but is willing to perform such acts to save his friends, such as when he shot a member of the Anti-Personnel Control Squad to save Jean, although that same night he could not stop regretting having to kill her. During the assault on Liberio, Armin transformed into a Titan to destroy the ships sent with reinforcements, although he did not hesitate to perform such an act, he felt guilt and remorse for his actions.

Finding himself in serious danger of dying, Levi injected the Titan Serum into Armin, transforming him into a Titan. After devouring Bertolt, he gained the ability to transform at will, and thanks to his healing abilities, he was able to heal his fatal burns.

Regeneration: Like any regular Titan or Shifting Titan, Armin is capable of regenerating almost any wound, both in his Titan form and in his human form.

After consuming Bertolt and gaining the power of the Colossal Titan, Armin's appearance in his Titan form changed drastically. Armin took on a similar appearance to his predecessor, being a Titan of imposing height, skinless and hairless. His body is disproportionately large, with a small head compared to his torso and rather elongated arms. Unlike Bertolt, some of Armin's bones, such as his ribs, trachea, and part of his skull, protrude from his body, and he also lacks a nose and ears. Like his predecessor, Armin also emanates a large amount of hot steam when using his transformation.