Because you like Sally Albright in When Harry Met Sally...
Accessing more than 10 percent of your brain can do strange things to anyone, and Lucy is Exhibit A. See them in Lucy.
It's a race against time to develop his theory of the origins of the Universe before Stephen Hawking's body and mind give out. See them in The Theory of Everything.
Seth is short-tempered, crude, and terrible at school, but hopefully there's nothing an epic party can't fix. See them in Superbad.
Merry Brandybuck is a troublemaking hobbit with a brave streak that some might call foolhardy. See them in The Lord of the Rings.
An opinionated pothead with a passion for conspiracy theories, Steven Hyde is secretly more sensitive than he lets on. See them in That '70s Show.
Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.
Aslan represents everything good and just, he's just not super reliable. See them in The Chronicles of Narnia.
Shaun is used to being lazy. And now, you're asking him to fight for his life? See them in Shaun of the Dead.
A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.
Velma Dinkley is all about getting results, not taking credit. She is the unsung hero of Mystery Inc. See them in Scooby-Doo.
C is for cookie, and that's more than good enough for him. See them in Sesame Street.
