Because you like Mike Hannigan in Friends
Extremely violent and loyal, Sandor Clegane is called the Hound for a reason. See them in Game of Thrones.
Gotham's unhinged Clown Princess of Crime will call you puddin', then punch you in the face. See them in DC Extended Universe.
Jonathan Byers is a kindhearted outcast who tends to be in the wrong place at the wrong time. See them in Stranger Things.
Randy Marsh is a geologist and Nobel Prize winner who is into binge drinking, starting riots, the Food Network, and P.F. Changs. See them in South Park.
Madman, murderer, or musician? No one knows the Phantom behind the mask. See them in The Phantom of the Opera.
Chicken resterauntier by day and drug overlord by night, Gus Fring doesn't let the stress of living a double life get to him. See them in Breaking Bad.
Lazy and cynical‚ Bernard Black is the ultimate curmudgeon. See them in Black Books.
A Silurian lizard woman, Madame Vastra has a penchant for puzzles and interspecies romance. See them in Doctor Who.
A powerful mob boss, Vito Corleone is always making offers people can't refuse. See them in The Godfather.
Butters Stotch is a kind-hearted student who likes ladybugs, Charlie's Angels, art class, baby-back ribs, and Little Bunny Foo Foo. See them in South Park.
It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.