Because you like Martha Jones in Doctor Who

Ianto Jones' withdrawn nature conceals his emotional pain.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

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

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

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

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

Merry Brandybuck is a troublemaking hobbit with a brave streak that some might call foolhardy. See them in The Lord of the Rings.

Maria Rambeau is a tough-as-nails Air Force pilot who is also a loving single mom. See them in Marvel Cinematic 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.

Claire Temple is a dedicated nurse providing secret care to New York's vigilantes. See them in Marvel Cinematic Universe.

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

Rupert Giles is a librarian on the outside, fearless evil-fighter on the inside. See them in Buffy the Vampire Slayer.

Leonard "Bones" McCoy is passionate, moral, and ready to stitch you back together. See them in Star Trek.