Because you like Donna Noble in Doctor Who

Ianto Jones' withdrawn nature conceals his emotional pain. See them in Torchwood.

Detective Alec Hardy doesn't let anyone get too close to him. See them in Broadchurch.

There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.

Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.

On the outside, Gwen seems meek and calm. But she has an inner core of steel. See them in Merlin.

A formerly righteous wizard, Saruman has been corrupted by the forces of evil. See them in The Lord of the Rings.

Xander Harris' life motto: laugh in the face of danger and then hide until it goes away. See them in Buffy the Vampire Slayer.

Hoban Washburne shows you can be a hotshot space pilot *and* play with dinosaurs. See them in Firefly.

Greg Lestrade is gruff, loyal, and quietly competent. See them in Sherlock.

Kate Beckett is a no-nonsense policewoman with a nerdy side. See them in Castle.

James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.

Part archaeologist, part philosopher, part politician, Jean-Luc Picard is an unashamed intellectual who runs a tight ship. See them in Star Trek: The Next Generation.