Because you like Alan Shore in Boston Legal
Jeff Winger thinks he's too cool for school, which is a problem because he just enrolled in community college. See them in Community.
Nick Carraway is the perfect observer: always there for the events, but never too involved. See them in The Great Gatsby.
Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.
Yuri is living in the afterlife, which takes the form of a high school where no one dies. But if you follow the school's rules and live a "normal" life you vanish. See them in Angel Beats!.
Anya Jenkins has a real harsh bark to go with her demonic bite. See them in Buffy the Vampire Slayer.
Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.
Murph is inquisitive, compassionate, and stubborn, with a passion for science she shares with her dad. See them in Interstellar.
Mike Ehrmantraut is rutheless, merciless, and probably the most endearing hitman you've ever met. See them in Breaking Bad.
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.
Macbeth was probably named "Most Likely to Kill His Rivals" in his senior yearbook. See them in Macbeth.
Faith has a chip on her shoulder and a stake in her hand to slay vampires in her town. See them in Buffy the Vampire Slayer.
Winn Schott is just your friendly neighborhood superhero support system. See them in Supergirl.