The Undercity lay under Mega-City One. It was polluted, run-down and decaying and so was created by concreting over the old city and building the new city above[1].

It was home to half-humans, mutants, escaped criminals and other outcasts from Mega-City One[1].



After Chaos Day the number of inhabitants quadrupled in one day, a state which continued until there were thousands of people in the Undercity[3].


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Judge Dredd (series): Cry of the Werewolf Part 4, 2000AD Prog 325
  2. 2.0 2.1 Cry of the Werewolf Part 5
  3. The Forsaken Part Five: Echavez