Taking that you are serious Neo, I will attempt to answer your questions:
Where is the parent supervision/ enforcement that introduces this kid to CONSEQUENCES for his destructive behavior?
Pretty much around all the time, because my dad gets home earlier than the kids and he usually does offer consequences for his destruction. However, any kind of corporal or verbal punishment has little to no effect. It basically leaves him in a worse state of anger and often more broken furniture.
Are you the childs parent? - Do you find yourself with your brother more than your actual parents (out of town a lot, meetings, gatherings, etc )?
No, i'm not the parent, and as mentioned, my parents are always in the house...
Perhaps this "Huge Game Room" is a substitute for your parent(s) lack of being around? Perhaps your family has money to just buy more controllers instead of taking care of problems?
Actually, it wasn't even meant to be a game room, as my parents use it as a home theater as well and also karaoke during family gatherings. The games happen to be in there because I bought a lot of them and I have no other TV to substitute the consoles.
Perhaps someone else in your family has violent tendencies?
Now that you mention it, his rages were probably inherited by my father, to no surprise. When my dad grew up in Vietnam, his father refused to teach and pass down the family martial arts because of his violent nature. After being kicked out of the dojo, my dad had to find another master and learned another style.
My older brother was also a big bully as well, and used force to get what he wanted as a kid. I'm guessing it's hereditary, because tracing back my roots I found out that most of them were ruthless and short-tempered.