Текст оригинала - википедия.
The Joker has proficient intelligence as well as expert knowledge in chemistry. Proving that is the notorious gas with a number of varieties. He employs his high-level craft skills to mask his weaponry as clown items, often having a flower holding acid on his jacket and a joy buzzer on his hand. In addition, the Joker is a genius schemer who is not always easy to get best of even by the Batman the World’s greatest detective. He is one of the two (including Bane) to beat Ra’s al Ghul in chess. Skillful enough to watch his own back in hand-to-hand combat often by being unexpected and using dirty tricks. Worth noting, too, is his immunity to many hazardous materials, such as the acid and other toxins.