Judge Dredd / Lobo

In this 1995 one-shot from Fleetway Publications, two of comics' most violent lawmen—Judge Dredd, the iron-fisted enforcer of Mega-City One, and Lobo, the intergalactic bounty hunter with a taste for chaos—collide in a no-holds-barred crossover. Written by longtime Dredd scribes Alan Grant and John Wagner, with art by Val Semeiks, the issue pits the ultimate authoritarian against the ultimate anarchist. It's a short, explosive meeting of British and American comic sensibilities that delivers exactly what the premise promises: maximum mayhem.