Armin Arlert (アルミン・アルレルト Arumin Arureruto) is the 15th and current commander (団長 Dancho) of the Survey Corps, named so by Hange Zoë before their death. He is also a childhood friend of Eren Yeager and Mikasa Ackerman, and one of the two deuteragonists of the Attack on Titan series. Although he appears to be among the physically weakest of the 104th Training Corps, his intelligence and strategic genius makes him an invaluable asset, especially when paired with Hange Zoë. After the battle of Shiganshina District, he took the power of the Titans from Bertolt Hoover and became the Colossus Titan.