Armin Arlert
Armin is the smallest member of the team, and he’s been friends with Eren and Mikasa since they were quite small. He’s not exceptionally powerful, as you can tell by his low Strength stat, and he doesn’t have a whole lot of Stamina, but you definitely shouldn’t overlook him. In fact, he’s one of the most useful characters in the game.
Armin starts off with the Tactician’s Eyes skill which lets him actually order the soldiers who are with him. That means you can aim and have them attack specific bodyparts while you focus elsewhere. He also learns skills such as Chain Dash and Always Prepared so that you can move around easier and bring more items. He’s not meant for direct confrontation, but when used properly he can help take down the largest of Titans.