What does the outside matter, anyway?
Bart is a very nice fellow. He can somehow tell when he's in the presence of a pretty girl, and may try to take advantage of his youth. Truthfully though, he's one of the kindest people in the school, seeing past fortune, looks, etc and getting to actually know a person.
The bandage around his eyes, which helps him learn An odd style of Kung Fu that involves 'Seeing without Eyes.' He also wears it to "hide" himself from Skyler and his allies. His eyes, when revealed, are generally shut. It may be possible that he is actually blind, and not just keeping his eyes closed.
Sometimes he'll have a baseball bat, or a walking stick to help him out. In the end, he relies most on the company of a friend.
Bart is the result of a Good Ole' Fashioned Teen Pregnancy, and was abandoned. He has been cared for by various students that often helped the community/their school, and grew to be a sweet boy. At first he wanted popularity and to be "Cool." At the same time, he began to learn Kung Fu from a Blind Man who taught music classes. He began to notice the harsh doings of the populars who took him in because 'He was cute' and left them in tears after his master was beaten to death by some Jocks who unfairly had his legs shot with arrows. This is thought to be when he lost his vision or simply refused to see again.
Since then, he has been training and living life one day at a time, wishing to find new friends he can trust closely. He often gives the impression he truly is blind...