Because you like Lester Freamon in The Wire

Khan Noonien Singh is super strong, super smart, and out for revenge. He always seems to be two steps ahead of his enemies. See them in Star Trek Into Darkness.

Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.

Dante Alighieri is a crusader fighting his way to absolution. See them in Dante's Inferno.

We're all puppets. Dr. Manhattan is just a puppet who can see the strings. See them in Watchmen.

In constant agony, Ava Starr will do anything to give up the superpowers that are slowly killing her. See them in Marvel Cinematic Universe.

Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.

Anya Jenkins has a real harsh bark to go with her demonic bite. See them in Buffy the Vampire Slayer.

Despite the war-torn world around him, Mal Reynolds still holds onto the shred of hope that life can be more than just living another day. See them in Firefly.

Protecting his family's name and its power are more important to Tywin Lannister than anything or anyone. See them in Game of Thrones.

A Silurian lizard woman, Madame Vastra has a penchant for puzzles and interspecies romance. See them in Doctor Who.

Chuck Bartowski is a sweet, laid-back electronics store/top secret government employee. See them in Chuck.

Although she is underestimated, Lagertha never fails to prove her worth as both a warrior and a mother. See them in Vikings.