Because you like Biff Tannen in Back to the Future
Nicholas Angel is super-dedicated to his job as a police officer. Maybe a little too dedicated. See them in Hot Fuzz.
On the outside, Gwen seems meek and calm. But she has an inner core of steel. See them in Merlin.
Donna is boisterous and spunky traveller of the TARDIS, exploring worlds beyond the simple mundane enterprises of Earth. See them in Doctor Who.
Davos Seaworth is steadfast, intelligent, and trustworthy, which are hard traits to find in a place like Westeros. See them in Game of Thrones.
Max Fischer is the President of every club who's fighting to save Latin at his school and kiss his teacher. See them in Rushmore.
Billy Batson is a troublemaking teen grappling with a pretty weird superhero identity crisis See them in DC Extended Universe.
Henry Mills is an idealistic young boy with the heart of the truest believer. See them in Once Upon a Time.
Gruff and sarcastic, Detective Harry Dresden use unconventional ways to track down perps, including using magic and the supernatural. See them in The Dresden Files.
Susan Pevensie is sensible, practical, and fiercely protective of those she loves. See them in The Chronicles of Narnia.
A majestic ruler, Mufasa is respected throughout the animal kingdom. See them in The Lion King.