Batman / Dylan Dog — DC Comics
Issue: #3
Merciless Christopher Killex is back from the grave and starts to fill Gotham City's streets with blood and horror! Dylan Dog and Batman are faced with an unsolvable dilemma: whether to accept the help of The Joker, who could prove to be a key ally in catching the serial killer.But can they really trust him?
First appearances: Madame Trelkovskyi
Creators: Gigi Cavenago, Roberto Recchioni, Werther Dell'Edera, Giovanna Niro, Pat Brosseau, Katie Kubert, Michele Masiero, Luca Del Savio, Laura Ciondolini
Characters: Batman, Dylan Dog, James Gordon, Etrigan, John Constantine, Joker, Madame Trelkovski, Bane, Clayface (Karlo), Harley Quinn, Killer Croc, Man-Bat, Mr. Freeze, Penguin, Ra's al Ghul, Riddler, Scarecrow, Two-Face, Jason Blood, Madame Trelkovskyi