Armin Arlert

Armin Arlert, referred to by fans as "Aryan Coconut", "Blond Coconuthead", "Shota He-Man", "Armin Hammer Baking Shota", "Blonde Yukiteru", "Male Christa", "Armin Armout", and a disproportionate amount of other nicknames, is the smartest and most quotable person in the Attack on Titan universe.""Someone who can't change anything can never change anything!""

- Armin Arlert

Exactly.

Armin Uses
Found throughout the series and various fan works, Armin is known for his great versatility as seen in the many uses of his different parts. Armins are part of the daily diets of many people. Armins are different from any other trainees because they contain a large quantity of "water" and when immature they are known as tender-shotas or jelly-shotas and may be harvested for drinking. When mature, they still contain some water and can be used as seednuts or processed to give oil from the kernel, charcoal from the hard shell and coir from the fibrous yellow hair. As development continues, cellular layers of erensperm deposit along the walls of Armin, becoming the edible human "flesh".

Personality
Armin is curious in many ways, wink wink. He has a deep fascination with what life is like outside the walls, probably because he's a dirty Atheist who hates God. He was frequently bullied as a child, since there's literally nothing else to do for kids inside the walls besides getting kidnapped by murderers or sold to an underground pedo ring.

Being beaten senseless everyday turned Armin into a timid crybaby. If only his parents were murdered in front of him.

Before Year 845
Armin lived a happy life with his parents beside the daily harassment he recieved from the local bullies. Seldom a day went without Armin finding and reading a banned book. Typically, they were satanic in nature. He would read them to Eren as well, since Eren is an illiterate hick.

Fall of Shiganshigana Arc
Armin starts the day by being beaten to a bloody pulp. When the Colossal Titan penetrates the wall, Armin cries and stands there. As the ship out of Shiganshina is setting sail, Armin stops crying to let Eren have a turn. Then Armin's grandpa literally gets sent off to die. You can probably guess how Armin would respond.

All Other Arcs
Armin cries a lot, but also comes up with an ingenious plan that just might work! The plan works and no major characters are killed. Hooray.

Genius
""If you want to defeat monsters, you must discard your humanity.""

- Armin Arlert ""If you gaze long enough into a titan, the titan will gaze back into you.""

- Armin Arlert

""Why do our noses run and our feet smell?""

- Probably Jayden Smith, Actually

""All matter is merely energy condensed to a slow vibration. We are all one consciousness experiencing itself subjectively. Life is a dream, there's no such thing as death and we're the imagination of ourselves.""

- Armin Arlert

""This is what it feels like. ...To be eaten by a titan, I mean.""

- Armin van Arlert

Trivial Matters

 * The cost of saving Armin is an arm and a leg.