Because you like Biff Tannen in Back to the Future
It turns out Dracula's son Alucard has some pretty severe daddy issues. See them in Castlevania.
A brilliant "extractor," Dom Cobb has spent the past few years running from the authorities and his inner demons. See them in Inception.
Lying is the most fun a girl like Alice can have without taking her clothes off. See them in Closer.
His name is Inigo Montoya and whoever killed his father should be prepared to die. See them in The Princess Bride.
He may forget his homework, lose his toad, and fall off brooms, but Neville Longbottom can also single-handedly destroy villains. See them in Harry Potter Series.
Causing mayhem practically since birth, rambunctious Fred Weasley plays pranks on his siblings and avoids school at all costs. See them in Harry Potter Series.
Sophie Sheridan is a proud and independent woman who hardly ever looks before she leaps. See them in Mamma Mia!.
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.
John Locke is an eerily calm, confident believer in the magic of the island that gave him his legs back. See them in Lost.
Felicity Smoak is a brilliant hacker who nonetheless becomes tongue-tied in front of attractive men. See them in DC Extended Universe.
Manipulative, conniving, and ruthless, Mr. Gold is enigmatic no matter what world he's in. See them in Once Upon a Time.