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Joker (Earth-One)

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Quote1 I may be insane... but I'm not crazy! Quote2
-- Joker src

Little is known about The Joker's past history, but it is safe to assume that his origin resembles that of his Earth-Two counterpart, in which he was the criminal Red Hood and after an accident involving chemicals, his skin turned white, his hair green and his lips red, contorting his facial muscles into a perpetual malignant grin. The incident also drove the man irrevocably insane and he dubbed himself the Joker, becoming the most dangerous criminal of Gotham City and one of Batman's most notorious adversaries.

Initially, the Joker appeared to be little more than a colorful crook with a penchant for gimmicks, but as the years passed, his crimes became ever more gruesome, a possible reflection of his own increasingly downward spiral into insanity. Although the Joker preferred working alone (a ubiquitous horde of henchmen not withstanding), he occasionally teamed up with criminal mastermind Lex Luthor, and together they matched wits against the "World's Finest" team of Batman, Robin and Superman.[1][2]

Gotham City was Joker's favourite location for his criminal activities. For this reason, he was confronted by Batman on several instances. When Joker impersonated a filmmaker and performed crimes posing as iconic comedians, his ultimate goal was to steal from a wealthy film fanatic, but his plans were foiled by Batman and Robin.[3] Joker tried several more harmless criminal schemes, but the outcome was always the same.[4][5][6]

Joker's victory

Joker's victory

Criminally Insane

After his last caper, Joker was captured and sent to a Mental Hospital for the Criminally Insane. Joker's mental condition worsened and when he learned that one of his thugs had double-crossed him, Joker broke out of the hospital and went on a murdering rampage, killing his former henchmen using his trademark Joker Venom, among other methods. With this new criminal mindset, Joker was able to knock Batman unconscious and had the chance to kill him once and for all, but he refused to do so and in the end, it allowed Batman to capture the Joker and bring him back to the authorities.[7]

Somehow, Joker escaped and murdered a whole family, making the crime look like a frame-up from other criminal. Batman fell for Joker's gag and he tried to help Joker capture the real culprit. Joker used Batman and led him to a trap, but Batman managed to survive and captured Joker as he tried to escape using the Batmobile.[8] Not long after this, Joker escaped from Arkham, even though Batman tried to stop him. Joker managed to dose Batman with a special variation of Joker venom, which could kill the Dark Knight from laughter in 72 hours. Joker murdered one of the scientist capable of creating a cure, but Batman reached the second doctor and captured the Joker by overcoming the urge to laugh. In the end Batman was cured and the Joker locked up.[9] However, the Joker escaped and he poisoned an entire prison as a result of his plan to poison a former henchmen. Joker then got hold of the antidote and forced Batman to fight against Wildcat. The heroes managed to retrieve the antidote and captured the Joker.[10]



  • Mental Illness
    • Psychosis: The Joker is unrepentently psychotic
    • Obsession: He is also obsessed with not only becoming Gotham's greatest criminal, but also with eternally foiling the Batman.



  • Joker Venom, and any number of weapons disguised as props, such as exploding fish or lapel flowers that spray acid. Famously, in Batman #321, he uses a gag gun that at first only shoots out a small flag that says "BANG! YOU'RE DEAD!", lulling his victim into a false sense of security, but on the trigger's second pull fires the sharp-tipped flag out like a spear and kills the man.
  • Joker Fish: The Joker used his Joker Venom to turn all of the fish in Gotham Bay into maniacally, grinning Joker-Fish. Consuming a Joker Fish had the same effect as one who had been subjected to the Joker Venom directly. In one instance, a house cat ate a Joker Fish, was Jokerized, then attacked its master, transmitting the venom, ultimately killing him.[11]
  • The Earth-One Joker shares many similarities with his Earth-Two and New Earth counterparts. Their origins, career history, personalities and physical appearance are nearly identical to one another. The establishment of the Earth-One Joker is the result of retroactive alteration to the character’s established published history (colloquially known as a Retcon). The Joker’s actual first appearance as an Earth-One character is a matter of interpretation as there has never been an actual distinction between when the Golden Age Earth-Two Joker ceased making regular published appearances and when the Silver Age Joker was introduced. It is commonly accepted that most appearances made by the Joker from the early-mid 1950s until 1986 are attributed to the Earth-One Joker. The Red Hood origin was revisited for the Modern era Joker in Alan Moore's 1988 one-shot special Batman: The Killing Joke. It is also unknown how much of the Joker’s Pre-Crisis history survived into his Post-Crisis chronology. While many of his earlier appearances from the 1950s and 60s are likely apocryphal, it is reasonable to assume that many of the Joker stories presented in the 1970s-80s are still considered canon as per current continuity.
  • In June of 1985, the dimension-spanning catastrophe known as the Crisis on Infinite Earths resulted in the collapse of the Multiverse. Earth-One and all of its denizens, including the Joker, ceased to exist and were merged into the restructured Post-Crisis continuity commonly known as New Earth.
See also: Joker (New Earth)
  • The Joker is the first DC Comics super-villain to receive his own ongoing comic book series.


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