The Riddler sometimes employs improvised weaponry disguised as puzzles, which he can create at a Good level. Examples have included large jigsaw puzzle pieces that explode, and large crossword puzzles that he wraps around opponents to ensnare them.
Strategy & Tactics * Puzzles * Logic
Higher Mathematics * Marksmanship (handguns)
The Legion of Doom * The Gotham City criminal underworld
When Edward Nigma was a boy, one of his teachers said she would hold a contest to see which of her pupils could solve a particular jigsaw puzzle the fastest. The night before the contest, Nigma secretly took a photograph of the fully assembled puzzle, which he found in the teacher's desk. Hence, the next day Nigma was easily able to win the contest, since he knew what the puzzle would look like when it was solved. This is the first known example of Nigma's dishonest use of puzzles.
Years later, the adult Nigma ran a puzzle booth at a carnival, at which customers would pit their skill against his in solving puzzles. If the customer solved the puzzle, Nigma would award him money, but if Nigma succeeded in solving the puzzle and the customer did not, the customer would have to pay Nigma money. Nigma always cheated by arranging the puzzles so that he, not the customers, would win.
Eventually, Nigma longed to make greater sums of money by dishonest means. He decided to become a thief on a grand scale, and to match wits with the police, and especially with the crimefighting Batman, by sending them clues to his upcoming crimes in the forms of riddles and puzzles. Thus it was that Edward Nigma began his career as the costumed criminal known as the Riddler.
Over the years the Riddler has become one of The Batman's most persistent, notorious, and crafty adversaries. The Batman has learned that Nigma has developed a conditioned reflex that makes it impossible for him to make an important move in his life without leaving a riddle of some sort to explain it. The Riddler tried to force himself to commit a crime without first sending a riddle clue to The Batman or to the police, but his subconscious mind prevented him from carrying the crime out. So the Riddler makes his riddles especially complicated and difficult. Thus he hopes to taunt The Batman by telling him about his future crimes, but in a way he hopes will be too hard for even the world's greatest detective to interpret. Nevertheless, The Batman has continually proved to be equal to the Riddler's challenges, and has always halted his criminal rampages.