Anti-Hero

How about a study in obsession? What about an insight into fixation?

Our hero lives at home with his mother. He lives in a basement apartment, an apparent coup for such an obvious dependent. Despite the illusion of autocracy, he does very little for himself. He is of an age that the law would consider him an adult, accountable for his own actions, at least in a court of law.
She buys his clothes, and fixes his lunch, and does his laundry. She goes downstairs once a week to change his sheets and tidy his room.
Our hero works at a sporting goods store although he has never actually participated in any sport.
He had asthma as a child and although he has grown out of it as an "adult" (and I use that term sparingly with this particular lad) he has never actually exerted himself in any activity that could be considered sporting competition.
He is however an active member of a Live Action Roleplay club, LARP for short. Those are the dudes that you might see at your local public park pretending to be wizards and rangers and clerics. They hit each other with foam swords. They add and subtract hit points. It's exactly like it sounds, dorky.
Our hero is a fan of many sports. He is a sports fan. His is a fanatic.
His favorite team to support is the Texas Longhorns Football Club. He bleeds burnt orange. Much of his wardrobe is burnt orange in hue. Many of his accessories bear the color and the emblem of The University of Texas. He owns several footballs that are UT themed. Some of them are signed by players past and present. Much of the space in his room is reserved for such sports memorabilia.
He attends all UT home games. His mother presents him with his season tickets each year for his birthday.
The season that the Longhorn's won the National Championship was a dream come true for our boy.
He owns a copy of a DVD entitled Live The Dream which chronicles the story of the 'Horns "Magical March" to the National Championship. He watches it every night before he falls asleep. He is obsessed.

That's your boy, that's your hero. How do you think a Joe Shmoe like that would react to a situation that called for bold action and decisive courage? How do you think your boy would handle it if greatness were thrust upon him?

This is a character I would like to explore.
What happens when we vicariously live through sports stars instead of living our own lives?