Warning : this clause deals with potentially disturbing issue thing .

Whatever the upcomingFlashmovie will contain , it for sure wo n’t delve into the nominal sub ’s most horrifying and wicked weakness . Even if the movie was rated R , it would belike be too utmost for Warner Bros to show this particular weapon on the self-aggrandizing screen , but that did n’t stop one of the comic ' most terrific characters from threatening the Flash with it .

The Flash is one of the most powerful characters in DC Comics . His super - hurrying enable him to crusade scoundrel faster than they can react to him , and also allows him to do things like phase through solid object and run on the Earth’s surface of clouds . While he does n’t have many traditional weakness like Superman ’s Kryptonite , his baron have been able to be disrupted by extreme temperature . Flash ’s speed has also been used against himby various supervillains . But none of these weaknesses are as memorable or worrisome as the one that the Robin King cook up to defeat him in the worst way possible .

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refer : Batman ’s Anti - Flash Weapons Show Why He Always Wins

InDark Nights : Death Metal # 3 , drop a line by Scott Snyder   and pull in   by Greg Capullo , the Robin King twit the Flash before the Batman Who Laughs arrives to kill him . The alt - universe Bruce Wayne divulge that he has a way to down every sub on Earth in his public utility belt , including the Flash . He then reveals he dug up the Flash ’s female parent and coated her body in a Speed Force - nullifying toxin that liquefies the muscles of anyone who comes into contact lens with it . He then salt away her corpse in one of the Flash ring that he usually apply to salt away his costume . If the Flash ever test to aggress him , theRobin King could trigger the tintinnabulation , and Flash would be kill by the body of his own female parent . The Robin King even states that when this happens it looks like she is try out to give her son a clinch as her arms are extended outwards .

This is an improbably worrying but in all likelihood very effectual tactic to kill the Flash , despite the fact it is probable also a mockery of other over - the - top deathtraps . The Flash has never truly gotten over the trauma of his mother ’s death . He even caused a world-wide reset in his attack to go back in meter and foreclose it . The weapon efficaciously weaponizeskey elements of Barry ’s Flashin a needlessly fell plan to break him both physically and mentally .

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Dark Nights : Death Metaltreated the Dark Multiverse as the home of"bad ideas"that were partly a parody of past ' grim and gritty ' stories . In fact , what differentiate the Dark Multiverse from DC ’s primary multiverse is that its worlds are half - constitute and ineffectual to survive for long . Despite this , Dark Nights : Death Metalreveled in the extremity of such single - use conception rather than regale them with condescension . Snyder actually let on that the Robin Kingwas   the maximum amount of horror he palpate DC would let him get away with , explaining why his arm are so worrying .

Given even the comics did n’t really show this weapon , it ’s extremely unbelievable the film would go so dark , but with theDark Multiverse still an ongoing threat , it ’s possibleFlash ’s nastiest weakness will one day return , turning the most tragic import of his life against him .

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