"Armin Arlert is a prominent character in the Japanese manga series 'Attack on Titan.' He is a young, intelligent, and strategical person who plays a crucial role in the plot.

Armin Arlert is a member of the Scout Regiment and one of the few surviving members of the fall of Wall Maria. He is best friends with Eren Yeager and Mikasa Ackerman, both of whom he had known since childhood, and together they share a deep bond. Unlike Eren and Mikasa, Armin is physically weak and not as skilled in combat as they are.

Despite his physical limitations, Armin's intelligence and strategic thinking make him an invaluable asset to the Scout Regiment. He is known for his ability to analyze situations and come up with successful tactics to take down the Titans. It is Armin who comes up with the plan to capture the Female Titan during the battle of Stohess District, showing his resourcefulness and quick thinking.

Armin's intelligence is not only limited to combat situations, he is also knowledgeable in politics and history, using his understanding to provide insight and advice to fellow soldiers and leaders. Armin's intelligence and quick-thinking became crucial to the success of the Scout Regiment during various battles and conflicts.

Despite his intelligence and strategic capabilities, Armin is not immune to fear and vulnerable to doubt. In the manga, there are numerous instances where Armin faces self-doubt and has to rely on his friends for support. He has often found himself at odds with his own conscience, struggling to reconcile his desire to protect humanity with the dark realities of war.

Despite his weaknesses, Armin's intelligence and unwavering loyalty have made him an endearing and beloved character among fans of 'Attack on Titan.' In conclusion, Armin Arlert is a significant and complex character whose intelligence and strategic thinking have made him a valuable asset to the Scout Regiment, fighting tirelessly to protect humanity from the Titans."