Because you like Meggie Folchart in Inkheart
Eponine is a scrappy street urchin with a bad case of unrequited love. See them in Les Miserables.
Even the smallest person can change the course of the world, if he's brave enough. See them in The Lord of the Rings.
Stranded on Mars, Mark Watney is armed with quick wits, an electronic diary, disco music, and an undying resolve to make it back. See them in The Martian.
Kathy is a natural caretaker who strives to find hope in even the darkest of times. See them in Never Let Me Go.
There are certain souls the surprisingly sensitive Death would rather not reap. See them in The Book Thief.
Gollum is slimy and seething with hatred, the last person you would want to meet in a dark cave. See them in The Lord of the Rings.
Susie Salmon has a big heart, even though it's not beating anymore. See them in The Lovely Bones.
Aragorn is the one true king, a title he is too humble to accept. See them in The Lord of the Rings.
Sharply perceptive and stubbornly principled, Jane Eyre might not have a very loud voice, but she knows when and how to use it. See them in Jane Eyre.
Phoebe Caulfield is a wise-beyond-her-years 10-year-old with an empathetic spirit. See them in The Catcher in the Rye.