2000 AD #421 was published by Rebellion and IPC Magazines Ltd. on June 1, 1985, as part of a series that began in 1977. Alan Grant and John Wagner write, and art comes from Brett Ewins, Carlos Ezquerra and Glenn Fabry. It features Judge Dredd, Judge Anderson, Merlin, Johnny Alpha and Sláine, among 17 characters cataloged on VerseDB.