Why does the Joker always laugh?

He even carries a card with the legend "Forgive my laughter: I have a condition. It's a medical condition causing sudden frequent and uncontrollable laughter that doesn't match how you feel.

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Is Joker a sociopath?

In The Dark Knight, the Joker is a loner, glib, unemotional and very violent. These behavioral traits are very consistent with psychopathy. As demonstrated by the Joker in The Dark Knight, psychopaths are unencumbered by the anxieties and emotions that normal people experience in interpersonal encounters. Is the Joker autistic? Joker was not autistic, because he seemed to deeply desire social connection (most of his fantasies were surrounding connecting with others). Further, aspergers are not more violent, and often more a victim of violence.

Is Joker immune to pain?

When he's defeated people like Bane, it makes you wonder how the Joker could stand a chance against him in a full-on brawl. That's because the Joker's body allows him to withstand legions of pain. Regarding this, what is batman's iq? 192 A trivia published in BuzzFeed states, "Batman's stated IQ is an unbelievable 192, several notches above the famed theoretical physicist (Albert Einstein), who was estimated to have an IQ between 160 and 180.

Is Joker immune to fear gas?

The Joker is immune to toxins and poisons of all kinds. He has been exposed to Joker venom, Scarecrow's fear gas, and a number of other toxins to no effect.