Because you like Rory Williams in Doctor Who
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.
Ciri had a princess upbringing, and some of the facts of common people's lives are a mystery to her. See them in The Witcher.
Luis is a deliverer of silver linings and long-winded stories. See them in Marvel Cinematic Universe.
Bumbling, jolly, and loyal, Rubeus Hagrid has the uncanny ability to make the best of a bad situation. See them in Harry Potter Series.
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.
Privileged young Bruce's childhood was nearly perfect. Now, his life is anything but. See them in Gotham.
A self-proclaimed diva, Mercedes Jones is on the hunt for a stage worthy of her talents. See them in Glee.
A sarcastic and nosy tomboy, Stephanie Tanner is understandably not crazy about being the middle child. See them in Full House.
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.
Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.
Cinderella will sacrifice herself to keep her family's memory alive. See them in Cinderella (Live Action).
Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.