Batman's most famous foes are the JOKER, PENGUIN, Riddler, and Catwoman. The JOKER is a criminal mastermind and arch-nemesis of Batman, known for his green hair, white skin, and maniacal laughter. The PENGUIN is a short, portly villain with a fondness for birds and umbrellas. The Riddler is an eccentric genius who loves to challenge Batman with riddles and puzzles. Catwoman is a mysterious anti-heroine and occasional love interest of Batman, known for her feline-inspired costume and acrobatic fighting style.