Because you like Mary Poppins in Mary Poppins
Motivated by a strong sense of curiosity, fleet-footed Lina Mayfleet is happiest when she's on the move. See them in The City of Ember.
Anywhere there's adventure, Jaskier is there to write a catchy song about it. See them in The Witcher.
M. Bison is a diabolical megalomaniac hell-bent on dominating the world. See them in Street Fighter.
Whether it's randomly bursting into song or writing Nancy Drew fan-fiction, Jess proudly marches to the beat of her own drum. See them in New Girl.
Aragorn is the one true king, a title he is too humble to accept. See them in The Lord of the Rings.
A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.
A dreamy space cadet, Luna Lovegood has never met a conspiracy theory she didn't believe in. See them in Harry Potter Series.
A crooked cop, Harvey Bullock is the product of a not-so-just criminal justice system. See them in Gotham.
The adventurous daughter of Port Royal's governor, Elizabeth Swann would rather conspire with pirates than sit pretty in her corset. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Daring on a bike but haunted in his personal life, even Johnny Blaze isn't fast enough to outride his past. See them in Ghost Rider.
Blunt, petty, neurotic, Larry David can never live and let live. See them in Curb Your Enthusiasm.
Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.