Because you like Morticia Addams in The Addams Family
Red doesn't like to explain herself. She wants her work to do the talking. See them in Transistor.
Jin Kazama is a fearsome warrior torn between the darkness and the light. See them in Tekken .
Whether it's punching a meteor or saving a teen from jumping, Superman tries to be in as many places as Kryptonianly possible. See them in DC Extended Universe.
Harry Mason has been told that he worries too much, that he's a little paranoid. But he just wants to protect what he loves. See them in Silent Hill.
Misaki Nakahara is keeping tabs on her newest project: recluse Tatsuhiro Sato. See them in Welcome to the NHK.
Keren Walker is a socialite looking to avoid work, keep a constant buzz, and be as snarky as possible. See them in Will & Grace.
Duck, girl, and legend: Ahiru's identities confuse even herself at times, and she often wonders which of them is truly her. See them in Princess Tutu.
For Sly Cooper, stealing isn't just about the haul. It's also about the journey. See them in Sly Cooper.
For the sake of science, Kurisu Makise will persevere no matter how deep into the dark secrets of the world she finds herself. See them in Steins;Gate.
Part of an elite team of investigators, Abby Sciuto is the happiest Goth to ever work in law enforcement. See them in NCIS.