The Joker is one of the most enduring characters in the history of comic books, and his name is so recognizable most people can picture his grinning face whenever his name is mentioned- even if they've never read a comic in their life.
But to really know the Joker's story you have to study every dimension of the character, including all the different versions from alternate dimensions, shows, movies and extended comic universes, all of which are truly Jokers at heart.
This Screen Rant video exposes 10 Alternate Versions of The Joke You Didn't Know About to the light, including the reality warping Emperor Joker, the madcap wanna-be Duela Dent and the half Joker-half Sabretooth hybrid Hyena.