Because you like Splinter in Teenage Mutant Ninja Turtles

Jack's big imagination is never limited by his incredibly cramped surroundings. See them in Room.

Stan Marsh is a fourth grader who is the ladies man of his classroom. See them in South Park.

Steven Universe is an excitable youth who likes junk food and trying to save the world. See them in Steven Universe.

While Fantine's gentleness has led others to take advantage of her, it ultimately forces her to become stronger. See them in Les Miserables.

The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.

This wizard is never late, nor is he early. Gandalf arrives precisely when he means to. See them in The Lord of the Rings.

For someone who swears she doesn't care for anyone, MJ Jones spends a lot of time observing her classmate Peter Parker. See them in Marvel Cinematic Universe.

Emma Woodhouse knows what's best for everyone else. Just don't try to tell her what to do. See them in Emma.

Although Jareth seems like he's just a harmless romantic, his powers make him a formidable foe. See them in Labyrinth.

A gentle alchemist who is soul-bound to a giant suit of armor, Alphonse Elric is growing into the responsibility handed to him. See them in Fullmetal Alchemist.