A reluctant hero, if you will. Stellan Skarsg rd, a professor, sees Matt scribbling on the blackboard. You're just a stupid janitor. They are bored. Then, let's go out and kick some ass.
Matt rushes over, and beats viciously on the guy.
This establishes him as strong and manly. He's also angry and repressed. The police pull Matt from his victim. Matt strikes a cop. THIS establishes him as misguided.