The supporting cast would gain their own spin-off strip "Strontium Dogs" in the 1990s, written by Garth Ennis and Peter Hogan. It was criticised by Ennis in the book "Thrill Power Overload" as being anti-climactic and that the lead, Feral, "was nowhere near as interesting as Johnny". The series was scrapped when David Bishop became "2000 AD"'s editor. The first story, "Monster" starring Feral, revealed the Search Destroy Agency no longer existed and mutants had been driven off Earth by a hastily assembled UK junta government; colony worlds were also shown to be under military occupation and severely ill-treating mutants, with the alleged mutant resistance merely using their organisation to extort "liberation" taxes from mutants (an allegory for The Troubles in Northern Ireland, Ennis' home).