Armin Arlert is one of the main characters of Attack on Titan. As the smartest member of the Survey Corps, he has come up with many great strategies that helped his teammates achieve their goals, while also uncovering the identities of some of his biggest enemies.
Whether it’s because of how smart he is, the sacrifices he’s made, or the battles he’s fought, Armin has become one of the most beloved characters in the series. There are many moments throughout the anime and manga that show how great Armin is.
10 Armin attacked Marley
After Eren went to Marley, he sent a letter to the Survey Corps telling them when to attack their enemies. Although Armin always preferred to solve his problems peacefully, he understood that he should go against his morals and attack the Marleyans for once. When he transformed into his Colossal Titan, he destroyed Marley’s fleet, giving the Survey Corps a huge advantage in the fight. Afterward, he boarded the aircraft the Survey Corps used to get in and out of Marley, meeting up with his teammates as they fought with their ODM Gear.
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9 Armin hit Eren
If invading Marley wasn’t bad enough, Eren also overthrew Paradis, causing his friends to not understand how he had changed so much. Eren addressed Mikasa and Armin with the intention of hurting them so that they despise him. He called Mikasa a slave and said that he had always hated her, causing Armin to attack Eren. Eren then hit Armin. However, that didn’t stop Armin from speaking freely as he told Eren that he was the real slave. Angry at this, Eren took Mikasa and Armin to a cell with the rest of his friends.
8 Armin Saved Jean’s Life
Due to how long the Survey Corps fought the Titans, they did not expect that other humans within Paradis would become their enemies. However, things changed when they began to learn more about the royal family and the walls of Paradis, leading the Anti-Personnel Control Squad to fight them.
During a battle against the two military groups, a member of the Anti-Personnel Control Squad nearly killed Jean, but Armin killed her instead, saving his friend. Since this was the first time Armin had taken a life, including a Titan’s, he felt terrible.
7 Armin Was Willing To Sacrifice Himself For Falco
After Falco inherited the Jawbone Titan, Connie planned to feed it to her mother to turn her back into a human. She had transformed into a titan years before, but she was never a threat, as she was unable to move. Knowing that Connie was wrong to kill a child, Armin was willing to sacrifice himself in her place. When he jumped into her mouth, Connie pushed her friend away. Armin helped Connie realize that it would be a mistake to kill Falco to save her mother by getting the soldiers and warriors to join forces with her.
6 Armin Saved Eren And Mikasa From Being Killed By The Garrison
After Eren transformed into his Attack Titan to fight normal and abnormal titans in the Trost District, the soldiers around him were terrified. The Garrison saw him as a threat and tried to kill him, as well as Armin and Mikasa. However, as Armin tried to convince them that Eren meant no harm, Pixis forced the soldiers back. Understanding that Eren could be of great help to humanity in retaking Wall Maria, Pixis and Armin worked on the plan that would result in Eren saving the citizens of Trost District.
5 Armin Found Out Annie Was The Female Titan
While in the 104th Cadet Corps, two of Armin’s companions were Marco and Annie. Since Armin had been very close to Marco, he knew exactly what his team was like. He realized that Annie had taken Marco’s equipment after his death and that someone had killed the titans that the military was studying.
After meeting the Female Titan, Armin also understood that whoever his heir was knew what Eren was like and that the nickname his friends gave him was “suicidal knucklehead”. Putting all these pieces together, Armin realized that Annie was the heir to the Female Titan.
4 Armin Teamed Up With His Teammates To Defeat Eren
When Eren killed most of the human race after starting the Rumbling, Armin and his friends caught up with him. Armin and Eren fought one last time to determine the fate of the world. As they attacked each other, Mikasa found a way into Eren’s titan’s mouth. In it, he found his head and decapitated him. Once Eren died, all of his friends were able to recall an interaction they had with him that took the memory of him from. Through this memory, Armin was able to understand everything that Eren tried to accomplish and was given the closure he needed after playing a major role in defeating him to save the world.
3 Armin Found Out That Bertholdt And Reiner Were The Colossal, Armored Titans
Annie wasn’t the only titan changeling Armin learned the identity of. He also discovered that Reiner and Bertholdt were the Armored and Colossal Titans. He found out after learning that Reiner and Bertholdt were supposedly from the same district as Annie. Knowing this, Armin realized that Reiner had been helping Annie when she attacked the Survey Corps, giving him information on where he believed Eren would be. Although the Survey Corps suspected Reiner and Bertholdt of being traitors, they pretended not to know anything until Reiner’s confession.
2 Armin Ended With The Rumble
When the soldiers and warriors caught up with Eren during the Rumbling, Armin entered the coordinate, where he spoke with Zeke. The two talked about the meaning of life. After hearing that Armin felt that the nice little things that mattered to him mattered more to him than any pain he felt, Zeke realized that life meant more than he had thought, awakening the Titan Changelings of the past who were under Eren’s control. All of them were able to stop the Rumble together thanks to Armin.
1 Armin Sacrificed Himself To Defeat Bertholdt
When the soldiers and warriors clashed in the Shiganshina district, Armin fought Bertholdt. He devised a plan for Eren to defeat the Colossal Titan, but he was nearly killed in the process, as Bertholdt badly burned him. Devastated by Armin’s sacrifice, Eren and Mikasa convinced Levi to use the Titan Serum he had to save Armin’s life. Levi fed Bertholdt, granting Armin the power of the Colossal Titan. When Armin found out that Erwin could have been injected with the Titan Serum instead of him, he felt that his teammates had made the wrong choice, but he eventually became the Survey Corps commander himself.