Cole had always been the smartest kid among his peers. He had gotten the best grades in his class, known all kinds of interesting things, and wanted to share and help. He had loved reading, but he had also loved talking about what he read. Unfortunately, some of the others didn't like that. They didn't like that he was smarter than them, so they latched on to what he was worse at than them, he wasn't athletic, and he wasn't very brave, and they used that. They teased him about it, bullied him, until no one wanted to talk to him, so he turned away. He became quiet, he didn't talk, he kept to himself and his books. He read and read, when he ran out of books, he read his textbooks, and he could remember them all. When he couldn't find anything else to read, he began to write. He found that he was a gifted writer, and so, he kept writing, and he found something happening. He would write, and think up unrelated things, and suddenly, they would all fall into place to make a masterwork. The character he wrote the most, was Quill, a heroic young blue mage in training. Quill was everything he wanted to be, he was tall, he was athletic, he was brave, and he was charismatic. Quill would fight back against bullies, and defeat villains. Soon enough, he started believing that Quill was helping him write his story, giving him the parts that fell into place, and thanks to belief, it became so. But Quill didn't just want to be written, he wanted to help his writer. And so, despite Cole not knowing it, Quill started on a mission Cole could never imagine, to help Cole become everything Quill was, everything he could be.
Quill is tall. He has messy black hair and striking blue eyes. He has muscles, but is no warrior. He solves problems with his wits, and with a quick tongue.
I'll admit, I'm projecting a bit onto Cole, but based on how little we've seen of him, I think this fits.
Oh! Just got one of those awesome inspiration shots that I based Quill on. Just as blue magic lets you see the future, Quill see's himself as Cole's future, or atleast, a possible one.