Because you like Rose Tyler in Doctor Who

Beneath Arthur's brash demeanor lurks the heart of a compassionate future king destined to unite the five kingdoms. See them in Merlin.

A singing nanny, Mary Poppins is practically perfect in every way. See them in Mary Poppins.

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

With an abundant supply of alcohol, nice restaurants, and free will, Crowley is a demon who is thoroughly enjoying his time on Earth. See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.

Aladdin is a street-thief who is on his way up. Way, way up! See them in Aladdin.

The seasoned detectives in River Heights have got nothing on amateur sleuth Nancy Drew. See them in Nancy Drew.

Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.

Peter Pevensie shows as much courage as a child king as he did under The Blitz of London. See them in The Chronicles of Narnia.

For Morgana, sometimes wanting to do the right thing can led you down the wrong path. See them in Merlin.

Darcy Lewis is a razor-sharp scientist studying things that science can't explain. See them in Thor.

Once described as a "beautiful, tropical fish," Ann Perkins exudes warmth, and unlike most of her friends she also has common sense. See them in Parks and Recreation.

In his heart, this student rebel is more of a lover than a fighter. See them in Les Miserables.