Who is Nick Levil from Hate List and what is their importance?

Nick Levil is a neglected boy whose mother pays little attention to him. He is the object of bullying in school, and he desperately wants attention. As a result, he wants to make a statement.... make people see him. Over the course of the novel, Nick becomes friends with a young man, who promotes this feeling in Nick, leading to the devastating day in which Nick pulls a gun at school and begins to target all the people he blames for his unhappiness. Nick never stops to think about what his actions will do to his girlfriend or his best friend. Nick takes the easy way out and leaves those who love him to pick up the pieces.