Because you like Richard III in Richard III
James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.
King Schultz is about as color-blind as a man of his era can be. See them in Django Unchained.
Protecting his family's name and its power are more important to Tywin Lannister than anything or anyone. See them in Game of Thrones.
Petyr Baelish's main assets? A sharp mind, deep pockets, and no scruples. See them in Game of Thrones.
Jail hasn't broken Andy Dufresne's spirit, but will his spirit help break him out of jail? See them in The Shawshank Redemption.
A gifted detective, Rust Cohle is as dark and twisty as any murderer he chases. See them in True Detective Season 1.
Born and raised in the darkness, Bane is determined to have the city totally under his control so that he can demolish it. See them in DC Extended Universe.
Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.
The only constant in Night Vale is Cecil's hypnotic voice. See them in Welcome to Night Vale.
Leonard "Bones" McCoy is passionate, moral, and ready to stitch you back together. See them in Star Trek.