Underworld Unleashed  Underworld Unleashed was a multi-title American comic book crossover event released by DC Comics in 1995. As well as the core storyline of the three-issue "Underworld Unleashed" miniseries (November 1995-late December 1995), most of the issues of the DC Comics titles that were published in November and December 1995 (including two in July 1995, two in August 1995, six in September 1995, nine in October 1995, three in January 1996 and two in February 1996) and four one-shot issues that were published at the same time were also part of, or at least connected to, the event. The main theme of "Underworld Unleashed" involved the then-new ruler of Hell, a demon-lord named Neron, offering first many of the DC Universe supervillains and then a number of the DC Universe superheroes various deals - in which they would be given their greatest desires in exchange for their souls or for completing a task for him - and the consequences of those deals. "Underworld Unleashed" is one of the very few major DC Comics crossover events "not" to directly involve Superman; at the time of the event he was off-world and in outer space as part of a crossover storyline in the various Superman titles called "The Trial of Superman!" (November 1995-January 1996). This is important to the "Underworld Unleashed" crossover event, since the superheroes involved are driven by the belief that Superman is the key to Neron's plans. Five members of the Flash's Rogues Gallery - Captain Boomerang I, Captain Cold, Heat Wave, the Mirror Master III and the Weather Wizard - are approached with an offer by fellow Rogues Gallery member Abra Kadabra, who had become an agent of the demon Neron in exchange for true magical powers to replace his technology-based magical powers. Abra Kadabra persuades them to cause havoc by destroying five separate targets (an arms depot by Captain Boomerang I, a nuclear reactor by Captain Cold, a dormant volcano by Heat Wave, an oil field by the Mirror Master III and a chemical dump by the Weather Wizard) simultaneously, with the promise of " "respect" " and " "a guarantee that they would be remembered forever, not as has-beens but as the most infamous villains of their age". " But Neron's deals are demonic, twisted and unfair and they were not told that their actions would cost all of them their lives and unleash Neron upon Earth. All five are killed in the ensuing explosions (which consume them in green fire), all of which form the points of a pentagram that creates a gateway which releases Neron.