Because you like Itzhak Stern in Schindler's List
Scott Pilgrim's superhero suit is just a video game t-shirt and sweatbands. But this slacker is brave enough to fight all his girlfriend's evil exes. See them in Scott Pilgrim vs. the World.
With great power comes great responsibility, but Peter Parker always seems to get the short end of that bargain. See them in Marvel Cinematic Universe.
As an undercover cop, Schmidt is getting to relive high school as a cool kid. See them in 21 Jump Street.
Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.
A vain and arrogant womanizer, Roy Mustang has hidden depths. See them in Fullmetal Alchemist.
Ponyboy Curtis is a "Greaser" on the surface, but he's a sensitive poet underneath. See them in The Outsiders.
Fiery, intelligent, and opinionated, Jo March rebels against the restrictions of her era. See them in Little Women.
There are certain souls the surprisingly sensitive Death would rather not reap. See them in The Book Thief.
Ace pilot Asuka Langley Soryu is confident, haughty, and a little less grown-up than she pretends to be. See them in Neon Genesis Evangelion.
Juno MacGuff is hoping sarcasm will get her through the stress of teenage life. And also, teenage pregnancy. See them in Juno.
Shrek is a nasty-on-the-surface ogre with a heart of gold and an earful of wax. See them in Shrek.
A daring conman, Flynn Rider is so charismatic that you might not mind when he steals from you. See them in Tangled.