Because you like Lirael in Abhorsen Series
Lyra Belacqua is prone to getting in trouble, but she's also clever enough to get out of it. Most of the time. See them in The Golden Compass.
Neil Perry is a brilliant student with an artist's soul. And he's desperate to unleash it. See them in Dead Poets Society.
Daria Morgendorffer is so defensive that she actively works to make people dislike her so that she don't feel bad when they do. See them in Daria.
Empathetic Nausicaa embraces all forms of life, even those that might scare other people. See them in Nausicaa of the Valley of the Wind.
R2-D2 has been in the galaxy saving business for decades. Not bad for somebody whose vocabulary is limited to "beep-boop." See them in Star Wars Series.
Sylar's victims are found all over the country, many with their brains removed. See them in Heroes.
Quicksilver is a cocky speedster who could run around the world in the time it's taking you to read this. See them in Marvel Cinematic Universe.
Ichigo Momomiya is a bubbly student by day, magical cat-powered superhero by night. See them in Tokyo Mew Mew.
Bridget Jones is a wanton sex goddess, struggling 30-something, and semi-hot mess. See them in Bridget Jones's Diary.
Chaos is what killed the dinosaurs, and there's nothing Jason "J.D." Dean loves more than chaos. See them in Heathers.
Wanting more out of life, Pam Beesly has a job she isn't crazy about and is engaged to a guy she's not sure is "The One." See them in The Office.
Buttercup is a farm girl turned princess who'd do anything to have her old life back. See them in The Princess Bride.