Because you like Holly Golightly in Breakfast at Tiffany's
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.
Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.
A superpowered test subject, Scarlet Witch can manipulate other people's thoughts and force them to confront their worst fears. See them in Marvel Cinematic Universe.
Brilliant, violent, and only a little insane, the Joker doesn't listen to anyone except the voices in his head. See them in DC Extended Universe.
Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.
Raphael is a short-fused hothead who loves a good fight and some tasty pizza. See them in Teenage Mutant Ninja Turtles.
Felicity Smoak is a brilliant hacker who nonetheless becomes tongue-tied in front of attractive men. See them in DC Extended Universe.
Once a lonely hat maker, Sophie Hatter is now cleaning goo from bathtubs and cooking breakfast for the grumpiest wizard in all the land. See them in Howl's Moving Castle.
Small in stature, Clara Oswald has a big appetite for adventure. See them in Doctor Who.
Nemo is a small fish in a vast ocean, but he dreams of seeing it all. See them in Finding Nemo.
As an undercover cop, Schmidt is getting to relive high school as a cool kid. See them in 21 Jump Street.
Can you be reckless and still be in control? Neil McCormick hopes so. See them in Mysterious Skin.