Here's every actor who has played the Joker on screen, from Heath Ledger's celebrated turn in 'The Dark Knight' to Joaquin Phoenix's performances as Arthur Fleck.

Seven actors have played Joker in a live-action movie or series since 1966. We ranked them from best to worst.

Click through a photo gallery of actors who have played the Batman supervillain Joker on the big and small screen.

The origin of the Joker's scars in The Dark Knight has remained a mystery since the 2008 movie, but Joker: Folie Deux might have teased an answer.

Warning: This article contains major spoilers for the ending of "Joker: Folie à Deux." The smoke has cleared, the dust has settled, and fans everywhere are taking a very mature and healthy approach to dealing with their uncomfortable feelings about every controversial thing in "Joker: Folie à Deux.