The Joker is a supervillain and the archenemy of Batman. He was first introduced in Batman #1 (Spring 1940) and has remained consistently popular. The Joker is a master criminal with a clown-like appearance. Initially portrayed as a violent sociopath who murders people for his own amusement, the Joker later in the 1940s began to be written as a goofy trickster-thief. That characterization continued through the late-1950s and 1960s before the character became again depicted as a vicious, calculating, psychopathic killer. The Joker has been responsible for numerous tragedies in Batman's life, including the paralysis of Barbara Gordon (Batgirl/Oracle) and the murders of Jason Todd (the second Robin) and Jim Gordon's second wife Sarah Essen.
- Personality -
From the media, to the films and his relationship with the Dark Knight, the Joker's personality could be the obvious. The Joker is a homicidal, psychopathic, ruthless, sadistic, maniacal, lunatic, manipulative, intelligent and diabolical master criminal who wants nothing but chaos and anarchy wherever he goes, as well as reveling in the suffering of others. In most speaking roles, the Joker is often given a high-pitched, comical, bouncy, silly, and over-the-top voice that occasionally stoops down to a slight growl, in accordance to his clown-like appearance and maniacal personality, with the only known exceptions being his appearances in Under the Red Hood and the Tim Burton Batman film, both of which give him a comparatively deeper voice.
His malevolent, sadistic sense of humor and psychopathic tendency of murdering whoever he wants to depicts him as Batman's greatest foe and not even Poison Ivy or even Two-Face could possibly beat the Joker.
The Joker is a genius but uses his intelligence for evil schemes in Gotham. However, he does not have any plan to kill Batman because he is "just so much fun" because he always plays his little "games". The Joker also likes to corrupt his enemies in various media and that is perfectly shown in the Dark Knight movie, when he manipulated Harvey Dent into getting revenge on those who were involved in Rachael's death just so that he can pledge more anarchy.
In the Dark Knight Trilogy and the Batman Arkhamverse, there are two personality sides of the Joker-in the Dark Knight, his diabolically devious side is shown and in the Arkhamverse, his psychopathically ruthless side is shown but in both trilogies, the Joker is sadistic, evil, maniacal, chaotic, ruthless, murderous and rather cunning in his behavior.
The Joker has a tendency of cheating death and escaping Arkham Asylum in order to create more chaos.
The Joker actually wants to corrupt Batman by causing greater tragedies in his life so that he can get Batman to kill him or make Batman like him. Even though the Dark Knight has shown to be incorruptible and sticks to his moral code of not murdering his enemies and having them receive justice instead, the Joker never gives because the more tragedies he causes, the more Batman will get more angrier at the Joker.
The Joker has a vicious, sadistic and ruthless mind of physically and mentally torturing his enemies or puppets. The perfect example is none other than Harley Quinn, who has an undying crush on the Crown Prince of Crime as he just uses her for his own diabolical schemes and he always slaps her and belittles her.
The Joker also takes a lot of pride in his crimes, often freely admitting and taking credit for the crimes he commits. In fact, he has done it so many times that usually a surefire sign that the Joker is actually innocent of a crime is when the Clown Prince of Crime actually denies any involvement in it.
“Do you want to know whyIuse a knife? Guns are too quick. You can't savor all the... little emotions. In... you see, in their last moments, people show you who they really are. So in a way, I know your friends better than you ever did. Would you like to know which of them were cowards?”