Although his true origin is never revealed, the most common is that he fell into a tank of chemicals that turned his hair green, his lips red, and his skin white. This transformation drove him insane and set him into the Arkham Asylum for the criminaly insane. While in the ward, he manipulated his psychiatrist, Dr. Harleen Quinzel, into falling in love with him. Thus helping him escape the asylum. This villain was first introduced as a serial killer who loved to kill his victims with a poison that would put a permanent smile on their faces. Joker soon became the archenemy of Batman after he kills dozens of lives and derails a train. Joker is the exact opposite of Batman in almost every sense of the idea. Batman is dark, serious, and never smiles. While Joker, on the other hand, is brightly colored, always joking, and always smiling.
As Joker's sidekick, Harley Quinn fell in love with Joker after having psychiatric sessions for him. Despite her violent behavior, she shows more mercy than Joker, often influencing villains to let Batman live through being strangled or tied.
As a child, he was forced to serve prison time for many years due to his father escaping the military prison. Bane grew up learning through books and learnings skills that can only be found in prison. He killed his first victim at 8 years old, which was another prisoner. He grew a fear of bats as a child when he began having nightmares of a bat creature. In the prison, he was subject to an experimental drug called Venom, which gave him immense strangth. Bane believed that fate had set him on a path to defeating Batman after he had began having the nightmares about the bat.
Obsessed with being the smartest man in Gotham, Edward Nigma sets out to outwit the Batman. With his insanly smart plots and riddles, he challenges Batman to solve the situations or else an evil plan with unfold. However, as Batman is able to solve every riddle, Riddler won't stop until is proven to be the ultimate genius.
