Because you like Marsellus Wallace in Pulp Fiction
Prideful and psychotic tendencies combine to make Dr. Eggman a dangerous and villain who will squash anyone in his path. See them in Sonic the Hedgehog.
Major Marquis Warren is a talkative, sharp-eyed, and cold-hearted Civil War soldier-turned-bounty hunter. See them in The Hateful Eight.
Don't ask the ruthless queen of the Tokyo underworld any questions unless you're fine with losing a limb. See them in Kill Bill vol. 1.
Holland March is known to wake up hungover in full bathtubs. See them in The Nice Guys.
A gifted detective, Rust Cohle is as dark and twisty as any murderer he chases. See them in True Detective Season 1.
Hans Landa doesn't seem to have issues with Jews, but he hunts them because he's determined to do his job well. See them in Inglourious Basterds.
All Catelyn Stark wants is to keep her family safe, but life in Westeros makes it nearly impossible. See them in Game of Thrones.
Omar Little is a pretty chill guy, as long as you can forgive the stealing and killing people. See them in The Wire.
Marv is a brutish but principled thug who'd be right at home on an ancient battlefield. See them in Sin City.
The black sheep of his family, Rhett Butler grew up to have charm and to see things as they are. He just doesn't give a damn anymore. See them in Gone with the Wind.
An undercover DEA agent, Max Payne is too focused on avenging the past to plan for the future. See them in Max Payne.