Because you like Will Turner in Pirates of the Caribbean: the Curse of the Black Pearl
Billy Batson is a troublemaking teen grappling with a pretty weird superhero identity crisis See them in DC Extended Universe.
Henry Mills is an idealistic young boy with the heart of the truest believer. See them in Once Upon a Time.
This cannibalistic villain may be a loner, but Killer Croc doesn't have problems with self-confidence. See them in Suicide Squad.
It's easy to see why Poe Dameron would side with the rebellion: he's bad at taking orders, likes to show off, and is committed to the cause. See them in Star Wars Series.
Woody is a selfless leader of Andy's toys who likes change less than a snake in his boots. See them in Toy Story.
Leonard Hofstadter is the normal one among his scientist friends, though in fairness that's a low bar. See them in The Big Bang Theory.
Samwell Tarly is a scholar, not a fighter. But that's not good for an aspiring member of the Night's Watch. See them in Game of Thrones.
Neal Cassidy is a charming former thief with a heroic side. See them in Once Upon a Time.
Howard Wolowitz is an engineer whose serious mommy issues somehow haven't dimmed his confidence. See them in The Big Bang Theory.
Privileged young Bruce's childhood was nearly perfect. Now, his life is anything but. See them in Gotham.
Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.
Success for Eggsy Unwin means joining Kingsman, and failure could mean death. See them in Kingsman: The Secret Service.