Because you like Amy March in Little Women
Smart, sarcastic, and loyal, Stiles Stilinski doesn't just want to be the sidekick in someone else's life. See them in Teen Wolf.
Whether it's punching a meteor or saving a teen from jumping, Superman tries to be in as many places as Kryptonianly possible. See them in DC Extended Universe.
Introspective Theodore Twombly would rather observe life than participate in it. See them in Her.
Fate has forced Amuro into the terrors of war, and he must use the Gundam and all of its power if he is to make it out alive. See them in Mobile Suit Gundam Series.
Just because Dracula wants to suck your blood doesn't mean he's not a gentleman. See them in Dracula.
Adults call him troubled and kids call him crazy, but Donnie Darko is too busy following the instructions of a giant bunny rabbit to care. See them in Donnie Darko.
Ash Williams is a houseware clerk at S-Mart and the Chosen One. See them in The Evil Dead.
Running away from murderous aliens has turned into an interstellar chase for Jupiter Jones. See them in Jupiter Ascending.
Hiccup Haddock III may be the only Viking nerd in recorded history. See them in How to Train Your Dragon.
He tells you everything you need to know: "I. Am. Groot." See them in Marvel Cinematic Universe.