Being the villain isn't bad really, it's just that most of the INTJ characters are basically robots and talk monotoned. No one talks about the ones like Bruce Wayne from Batman, or Matt Murdock from Daredevil. Both are INTJs with personality.
INTJ fictional characters: Snape of Harry Potter, Batman, Palpatine of Star Wars, Katniss of Hunger Games, Moiraine of Wheel of Time, Ripley of Aliens, Gandalf of Hobbit and Lord of the Rings, Loki, Hannibal Lecter of Silence of the Lambs (I know some will debate some of these but there is sufficient evidence to support that they all embody INTJ.)
How to write a female, INTJ character as told by a female INTJ. Why are male INTJs (such as Sherlock, Mr. Darcy, and Ender) so popular, and female INTJs virtually nonexistent? (Write for the King Blog)
The Myers-Briggs Types of 202 Fictional Characters
INTJ Thoughts Tumblr 36 - What do you mean? he said. Do you wish me good morning, or mean that it is a good morning whether I want it or not; or that you feel good this morning; or that is is a morning to be good on? - gandalf