Because you like Amy Pond in Doctor Who
Sansa Stark is a fan of all things pretty. Unfortunately, her life is about to get extremely ugly. See them in Game of Thrones.
Johannes Betzler is an overwhelmed little boy caught up in deeply confusing times. See them in Jojo Rabbit.
Jillian Holtzmann's madcap mind is always whirring and she will transform anything into one of her machines. See them in Ghostbusters (2016).
Aslan represents everything good and just, he's just not super reliable. See them in The Chronicles of Narnia.
Frodo might have carried the ring, but Samwise Gamgee carried the ring bearer. See them in The Lord of the Rings.
Alex Danvers is a brilliant engineer tasked with alien threats, and one of those aliens is her adopted sister Supergirl. See them in Supergirl.
Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.
Polite and clever, Annie James is not afraid to stir up a little mischief. See them in The Parent Trap.
Though he may be blind, Chirrut Imwe sees the power of the force more than most. See them in Rogue One.
Jyn Erso is a rebellious criminal tasked with stealing the blueprint to the Death Star to find its fatal flaw before it destroys the planet. See them in Rogue One.
Foggy Nelson is a principled small-time lawyer fighting for fellow little guys. See them in Marvel Cinematic Universe.