Why your favourite film baddies all have a truly evil laugh

What's the role of evil in storytelling?

Heath Ledger as The Joker in The Dark Night, Christopher Nolan, 2008
Mind & Brain

Towards the end of the Disney film Aladdin (1992), our hero's love rival, the evil Jafar, discovers Aladdin's secret identity and steals his magic lamp. Jafar's wish to become the world's most powerful sorcerer is soon granted, and he then uses his powers to banish Aladdin to the ends of the Earth.

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