Character: postal dude
The Postal Dude is the titular protagonist of the POSTAL series.
The Postal Dude is ranked in the "Top 10 Most Brutal Video Game Characters" ever made. As such, he is very controversial, while in return Running With Scissors stated that they did not create the Dude as a violent person in the first place, and leave players free to decide if he's good or evil.
The Dude appears as calm and easy-going, but can be sociopathic and cynical when pushed to the edge. He often states he doesn't like video games after killing people, however he is seen supporting them, since at one point he sets up a petition to "Make Whiney Congressmen Play Violent Video Games."