Because you like Stephen Hawking in The Theory of Everything
Sometimes being a supportive girlfriend like Ophelia doesn't work out too well. See them in Hamlet.
Jyn Erso is a rebellious criminal tasked with stealing the blueprint to the Death Star to find its fatal flaw before it destroys the planet. See them in Rogue One.
Lucius Malfoy is a judgmental social climber who has a bigoted superiority complex. See them in Harry Potter Series.
Bran Stark discovered a scandelous family secret. He swore to keep quiet but soon found himself on the receiving end of attempted murder. See them in Game of Thrones.
N'Jadaka is a righteous man with a violent agenda. See them in Marvel Cinematic Universe.
Cosette is an idealistic woman whose innocence stands in contrast to her harsh childhood. See them in Les Miserables.
The Genie is the perfect buddy, granting every wish we might have and keeping life good-spirited. See them in Aladdin.
This barber doesn't cut hair. Sweeney Todd sends his clients down a chute to be baked into his partner-in-crime's pies. See them in Sweeney Todd: The Demon Barber of Fleet Street.
Peter Pevensie shows as much courage as a child king as he did under The Blitz of London. See them in The Chronicles of Narnia.