Joker.

In «Joker : Last Laugh" (2001) explains the chaos caused by Joker in Gotham after being tricked by some Arkham doctors, who try to rehabilitate him by making him believe that he suffers from a terminal illness. Although Dick Grayson kills Joker in an act of courage, thinking that Robin—Tim Drake—had died in the chaos, Batman revives his enemy to prevent Grayson from feeling guilty about his murder.[17]​[103]​ Todd revives in "Under the Hood" and tries to persuade Batman to kill Joker due to the events of "A Death in the Family."ia", however the hooded hero refuses as this would incite a series of murders of other criminals.[108] After being injured by a deranged police officer who assumes the identity of Batman in "Batman and Son" (2006) , assumes a cruel and enigmatic personality who tries to kill Harley Quinn in "The Clown at Midnight" (2007).[109]​[17]​ Although the illicit organization Black Glove recruits him in order to assassinate Batman in " "Batman R.I.P." (2008), Joker prefers to betray the group and gets rid of each of its members.[103] After the apparent death of Batman in "Final Crisis" (2008), Grayson frames Joker for a series of homicides and arrests him. .[110] It should be noted that, during his imprisonment, he is beaten by Damian Wayne in a manner similar to the mistreatment that led to Todd's death. However, the villain escapes and takes the opportunity to attack Black Glove, until he is stopped again by Batman.[111]​[112]​[113]

Joker's personality also prevents him from feeling fear in risky situations. For example, in "Batman: Knightfall" (1993), despite Scarecrow giving him a dose of fear toxin, Joker simply laughs and exclaims, "Boo!" and resources 1

Asexual