Because you like Nanny McPhee in Nanny McPhee
Although Penny's friends have genius-level IQs, they regularly come to her for advice and insight. See them in The Big Bang Theory.
WALL-E is a quirky little romantic robot cleaning the wasteland known as Earth. See them in WALL-E.
Realizing that New York City was in his blood, Wilson Fisk will now do anything to make Hell's Kitchen a better place. See them in Marvel Cinematic Universe.
Gotham's unhinged Clown Princess of Crime will call you puddin', then punch you in the face. See them in DC Extended Universe.
There is never a dull moment with Jim Moriarty: expect booze and sing alongs in between all of the homicide. See them in Sherlock.
Meticulous Arthur is always prepared, but he may not be ready to be the point man in the criminal world of dream sharing. See them in Inception.
It is a truth universally acknowledged that Elizabeth Bennet doesn't suffer fools or prideful men. See them in Pride & Prejudice.
Clementine is a beacon of innocence in a dangerous, deadly world. See them in The Walking Dead (Video Game).
Larger than life and wealthy beyond measure, Willy Wonka is more than a titan in the sweets industry; he is an arbiter of taste. See them in Charlie and the Chocolate Factory.
This isn't the Captian Hook of your nightmares; he's charming and devilishly handsome. See them in Once Upon a Time.
Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.