This is the student that is kind of the class weirdo. Or they just do things a lot differently than the rest of  the class. They may have strange quirks, play games differently, say strange things, have interesting tastes, think much differently.... There's just something about  them that separates them from the other kids. The sad part is that this strange kid isn't bad or crazy: the other kids just don't like their quirks or ideals and often leave them out of anything in class. Or just try to avoid them.