Basically Joker isn't immortal but he's one of the few entities in Gotham capable of making people believe he is, quite successfully.
So, how did the maestro of all things Batman, Scott Snyder, change the Joker's backstory to make him immortal? He used the same methodology that created Vandal Savage and Ra's al Ghul, the strange, life-extending chemical that originally fell to Earth as a meteorite and later became the source of the Lazarus Pit.
The Joker may be seen as one of the most evil supervillains of all time, but a member of the Justice League once cured his madness. Completely. But, one member of the Justice League has the ability to cure his madness - even if it's only temporary.
The new issue revealed the shocking new origin of Batman's most infamous villain, The Joker. As it turns out, The Clown Prince of Crime is actually immortal. According to the new story, The Joker is one of three people who have come in contact with this mysterious meteorite that fell to Earth.
Batman: Endgame"Batman: Endgame" is a six-issue comic book story arc first published by DC Comics in 2014, featuring the fictional superhero Batman. Set after the events of Batman Eternal, the story involves the return of Batman's arch-enemy, the Joker, following his disappearance in the 2012 story arc "Death of the Family".
In Joker, Phoenix's character is about 30 years old. In the film, we watch as he interacts with a young Bruce Wayne of about nine or 10 years old. If Pattinson's Batman is in his 30s, that would leave Phoenix's Joker in a future movie somewhere in his 50s—closer to the actor's actual age.
To a certain point, Doomsday is practically impervious to blunt force trauma of a punch from an opponent like Superman, seeing as he has been killed by Superman with his fists. However, Doomsday can be injured by exceptionally powerful blows though not be killed by normal means.
Should the fabric become soiled, clean with a soft cotton cloth or soft toothbrush slightly dampened with distilled water (sodium-free seltzer water may be substituted) and a mild bar soap, applied in a circular motion. Repeat with distilled water until no residual soap remains.
Dampen the soft cotton cloth with distilled water or sodium-free seltzer water and a mild bar soap and apply it to the soiled leather in a circular motion. Repeat the process with distilled water only until no residual soap remains. Then allow the bag to dry completely.