In fact, after he fell into the evolutionary medicine pool, his facial nerve was damaged and he became a white-faced clown with a grin forever. He is keen to suddenly appear in media images or crowded places with this image. He can use chemicals to make people laugh to death, so as to lure citizens with money and intend to destroy the whole Gotham town with poison gas. I am a pervert, so I am the philosophy of life of all villains. My abnormal sign is hysterical laughter. The moment I fell into hell laughing, you would think that Max Bilpen's sentence "No one has ever died laughing" was too absolute. Actually, I'm not boring. If you want to know the real me, please taste Jack Nicholson's declaration-"My smile is only on the surface, and my joy is only in the skin. If you can see my heart, you will find me crying. " The whole world thought he gave me a face of Yongheng Zhang until Heath Ledger appeared ... (So he was violent, vicious, bloodthirsty and moody. )

The clown is famous with a surname. His name is Jack Napier.

The clown in The Dark Knight is a mystery. Police officer Gordon said that the clown "doesn't match his fingerprints, DNA and dental records, but he is wearing a costume, with only a knife and bandage in his pocket, no name and no other identification", and he finally didn't know the clown's past identity.

JOKER is a ghost card in poker, and the clown in English is JOKER.