Because you like Rory Williams in Doctor Who
Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.
Cinderella will sacrifice herself to keep her family's memory alive. See them in Cinderella (Live Action).
Toph is a tenacious earthbender full of spirit and spunk and hates when people try to baby her because she's blind. See them in Avatar: The Last Airbender.
Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.
In a rag-tag group of kids determined to take down the imperialistic Fire Lord, Katara is the glue that holds them together. See them in Avatar: The Last Airbender.
Maurice Moss is a dedicated IT guy who even talks like a computer. See them in The IT Crowd.
A childlike space cadet, Brittany Pierce has a surprisingly open-minded spirit. See them in Glee.
Bumbling, jolly, and loyal, Rubeus Hagrid has the uncanny ability to make the best of a bad situation. See them in Harry Potter Series.
A devoted butler, Alfred Pennyworth is both a fiercely protective guardian and a lethal gunman. See them in Gotham.
A determined and cold-hearted spy, Cassian Andor will do what it takes to stand up to the evil Galatic Empire. See them in Rogue One.
Luis is a deliverer of silver linings and long-winded stories. See them in Marvel Cinematic Universe.