Akito
From Desaiuniversity
Akito comes from the manga Airgear. Since he had to be aged a few years to fit into a university game (as would the vast majority of other characters in the series), where he comes from in canon isn't as essential as it could be. His background takes into consideration events up to the fight with Udou Akira (volume nine) as this was how far the manga was released in English as of when he was written for the game. Agito is still around and in fact seems to be causing more trouble in Desai than he ever did in Japan. Akito only uses the manga canon; most of the differences between the manga and anime seem to be cosmetic (for example, he's heterochromic in the manga but his eyes are normal in the anime), but I'm disclaiming anyway.
Akito and Agito are munned by Megan.
Basics
Name: Wanijima Akito (鰐島 亜紀人); has a second personality named Agito (咢).
AKA: Fang King (牙の王, Kiba no Ou), Agito the Shark
Age: 17
Height: 5'1"
Weight: 112 lbs.
Hair: Blue-black.
Eyes: Dark gray, golden-brown (heterochromic).
Family: Older brother Kaitou (estranged).
Style: Akito dresses, quite frankly, like he got lost in the girls' section of Hot Topic. He wears skinny jeans, printed t-shirts over long-sleeved shirts, thin belts that are more for decoration than anything, candy-colored canvas sneakers, and bracelets and pins. Basically, ninth grade girl punk chic. He wears his hair long, and almost always wears an eyepatch (Akito wears it on the left side and Agito on the right, making this the most reliable way to tell them apart). Agito doesn't care enough about clothing to have a distinct style from Akito's, except for the black team jacket and gloves he wears for air-treck.
Notable Features: His heterochromia would be a notable feature if he didn't always cover it up with an eyepatch; people who are around him enough to have seen both Akito and Agito will see this, though, since the two personalities wear it on different sides.
Musical Tastes: Akito listens mostly to instrumentals, both western classical music and traditional Japanese music. He also has a longtime and not-so-secret weakness for bad pop music that he hasn't outgrown and probably never will. Agito prefers his music fast, harsh, and loud; he'll really listen to anything, as long as it meets those requirements.
Weapons of Choice: Akito doesn't use any weapons. Agito uses his air-treck.
Personality
Akito is, at least in his current mental state, a quiet, friendly person who particularly enjoys reading and writing. He's optimistic and at times naive, especially in regards to people (he always wants to see the best in them, even sometimes when it's obvious he shouldn't). This is likely partly just how he is and partly because Agito has a tendency to shield him from the worst things in his life. Akito loves to be around people and makes friends easily, although sometimes his childish demeanor can be off-putting. He's enthusiastic, cheerful, and affectionate but at the same time is often introspective and insightful. Akito is studying English (focusing on creative writing) and Japanese at Desai University. Akito is gay, but (1) is emotionally not equipped to be in a stable relationship and (2) is hopelessly fixated on his friend and teammate Minami "Ikki" Itsuki. He is by and large not interested in sex, more concerned with trust and platonic affection thanks to all of his issues.
Akito suffers from a dissociative disorder; not the well-known MPD/DID, which would technically require him to have more than two personalities, but something very close to it. Agito comes out when Akito is threatened or frightened, or simply when he wants to come out. He is loud, crude, brash, and aggressive; he's also a loner and prone to insults and bullying. He prefers athletics to intellectual pursuits, and is the one who does air-treck. In short, he's the less passive, more unpleasant part of Akito taken to the extreme. Although he isn't registered as a separate student, Agito takes a weapons class and a demolitions class under Akito's name.