Because you like Travis Bickle in Taxi Driver
Marv is a brutish but principled thug who'd be right at home on an ancient battlefield. See them in Sin City.
Just call Jeff Lebowski The Dude. Or His Dudeness, Duder, or El Duderino if you're not into that whole brevity thing. See them in The Big Lebowski.
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.
Yes, she's an "older" woman, but that just makes Mrs. Robinson sexier and more seductive. See them in The Graduate.
Terence Fletcher is a brutal and unflinchingly strict music teacher hell-bent on whipping his students into shape. See them in Whiplash.
Jim Stark is a teen torn apart by what the world asks of him. See them in Rebel Without A Cause.
Major Marquis Warren is a talkative, sharp-eyed, and cold-hearted Civil War soldier-turned-bounty hunter. See them in The Hateful Eight.
Omar Little is a pretty chill guy, as long as you can forgive the stealing and killing people. See them in The Wire.
Billy Butcher's job is to give everyone hell by any means necessary. See them in The Boys.
Herion is Mark Renton's favorite drug. He sniffs it, smokes it, swallows it, sticks it up his arse, and injects it into his veins. See them in Trainspotting.