INTJ's have no respect for any sort of authority, a superior in a workplace, rules...anything and are generally extremely arrogant, depending on their knowledge of their own strengths and weaknesses, they view the world as a chess board and people as chess pieces, but they have extremely poor emotional intelligence, so seem like human robots and seem almost emotionless. It's why house is so cruel to others. They also have a very dark sense of humor and never spare anyone's feelings, generally anyway.
There's always exception's and I can only speak of what I've read, of myself and of well written characters..., they generally have higher than average intellect as well, since all they do is think about how and why things work, or how thing could be improved etc..., an example would be the Sherlock Holmes movie, as portrayed by Robert Downey jr, he's also INTJ Asperger, constantly analyzing things.... it's all They/we do...
As for why both Sherlock and House are never outright stated to have Asperger's, it's to give them an air of mysteriousness and...well,
"weirdness", we appear quirky to "Neurotypicals" or "normals"
To find out if you are an INTJ or not you would need to take a Meyers briggs test, an accurate one, they have 70 questions or so, maybe more in some cases and there is 16 personality types, if there is less than that many questions,find a different site, it won't be accurate, only 2% of the population have an MBPT of INTJ, it's the second rarest of the types.
Forest Gump is on the autism spectrum as far as i know