Because you like Nick O'Leary in Nick and Norah's Infinite Playlist

CIA operative Carrie Mathison is on a self-assigned mission to follow a lead, whether it be the truth or just her delusions playing tricks. See them in Homeland.

Olivia Benson brings order to a world full of chaos. And she never forgets who she's fighting for. See them in Law & Order: Special Victims Unit.

The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.

Raiden is an efficient soldier haunted by his repressed past. See them in Metal Gear Series.

Hiro is a free-spirit and remarkable genius who loves bot fighting and problem-solving. See them in Big Hero 6.

This power-hungry Time Lord calls himself the "master of all." Bonus: he has 13 lives. See them in Doctor Who.

Hotheaded and arrogant, Kaneda is nevertheless fiercely protective of the biker gang he leads. See them in Akira.

World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.

There is never a dull moment with Jim Moriarty: expect booze and sing alongs in between all of the homicide. See them in Sherlock.

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.

There are certain souls the surprisingly sensitive Death would rather not reap. See them in The Book Thief.