Joker is one of the most mysterious characters in the DC Comics Universe. He appeared in the comics in 1940, and was supposed to perish at the same time, but didn’t. The character was originally based both on the image of the Joker playing card and on the image of actor Adrian Veidt, who played the role of Guinplain, the man with the grin frozen on his face, in The Man Who Laughs in 1928.