Galagangster
A man who puts his life on hold just to fight aliens in Galaga. He'll yell at you if you interrupt him and he'll probably throw his joystick at you if you laugh at him getting destroyed by level 50.
My neighbor once yelled 'I'm not done with Galaga!' at me when I knocked on his door.
I saw a guy in the arcade crying because he lost his high score to a kid who looked like he just woke up.
My brother plays Galaga so much he started talking to the screen like it's his best friend.