Batman Judge Dredd The Ultimate Riddle (1995) #1

Cosmic villain Xero plans a bloodfest with Batman and Judge Dredd as the star performers. Using the Riddler as a pawn, Xero gathers the toughest beings from throughout the cosmos and pits the Dark Knight of Gotham City against the number-one lawman of Mega-City One. Now it's hero vs. hero - to the death. Written by Alan Grant and John Wagner, with painted art by Carl Critchlow and Dermot Power. Painted cover by Critchlow.