Because you like Susan Pevensie in The Chronicles of Narnia

Frank West enjoys the adventure that comes from his work. But a zombie outbreak might be a little too much even for him. See them in Dead Rising.

Titus Andromedon will show you the ropes, help you with your problems, and sing at you constantly, whether you like it or not. See them in Unbreakable Kimmy Schmidt.

When the going gets tough, Dre Johnson gets tougher. Well, he'd like to think he does. See them in Blackish.

Aldous Snow is a rock star who plays hard and parties harder. See them in Get Him to the Greek.

Convinced that the world is conspiring against him, Tatsuhiro's reconciled himself to his fate as a shut-in. See them in Welcome to the NHK.

A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.