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: Akito; has a second personality named Agito.
AKA: Fang King, 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.
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.