WARNING: The following contains spoilers for DC vs. Vampires #1, on sale now from DC Comics.
Taking place outside of the main DC Universe continuity, the new horror-fueled comic book miniseries DC vs. Vampires can really go for broke with its blood-sucking premise, including inflicting real casualties on its iconic heroes and villains as the world's vampires band together to rise up from the shadows and attempt to completely subjugate humanity. Like the acclaimed DCeased, this has led to some major losses right from the story's opening issue, including the horrifically gory murder of a longtime member of the Justice League and resident Super Friend Zan of the Wonder Twins at the hands of an undead traitor.
While the vampire community in the DCU has largely kept to the shadows, usually avoiding an all-out war with humanity to prevent them facing the full might of the superhero and supervillain communities, there has been a change in vampire leadership. Longtime regent Mary, Queen of Blood, has been violently deposed by a new faction of vampires seeking to preemptively strike at the heroes and villains before launching their sweeping, grand plan to conquer the world. And when vampire hero Andrew Bennett arrives at the Hall of Justice to warn the Justice League in DC vs. Vampires #1, by James Tynion IV, Matthew Rosenberg, Otto Schmidt and Tom Napolitano, he unexpectedly causes Zan's bloody death.
Bennett is permitted entry into the Hall of Justice by Green Lantern Hal Jordan, taking the distressed vampire to the Justice League's sickbay while Bennett shares what has transpired, including the vampires already moving to eliminate the Legion of Doom inside their own headquarters. Zan walks into this conversation and overhears the undead threat bearing down on humanity from the shadows, with an annoyed Hal revealing himself already converted as a loyal vampire dedicated to their fiendish new cause. And now no longer tasked with silencing Bennett, Hal moves to brutally neutralize the only other apparent witness to this conversation, Zan.
Using his still active Power Ring, Hal binds Zan and creates a hard light construct of a large blender, big enough to house the Wonder Twin inside. As a terrified Bennett watches, Hal quickly blends Zan into a makeshift smoothie which he consumes on the spot, commenting that the contents are a bit too watery in a dark joke alluding to Zan's superpower of being able to transform into any form of water. And with this witness eliminated, Hal then quickly and decisively kills Bennett before continuing his ruse as a committed superhero, with none of his Justice League teammates aware of what has just horrifically occurred in their own headquarters.
With Jayna and Gleek still evidently alive and well, it's only a matter of time before Zan's loss is eventually detected, though this revelation may come too late for the heroes before more losses are inflicted. In his rush to dispose of the evidence of Zan's demise, a piece of the Wonder Twin is glimpsed still laying in the medical bay's sink, perhaps to be discovered by one of the heroes later, setting up Hal's possible exposure as a vampire. And with Batman now aware that the vampires are quickly massing against the heroes and villains from a completely separate source of information, Zan's death will hopefully not be in vain as the battle between the living and undead is poised to escalate.