Irredeemable is an American comic book series written by Mark Waid and published by Boom! Studios. The series follows the fall of the world's greatest superhero, the Plutonian, as he begins slaughtering the population of Earth. His former allies, the superhero group The Paradigm, attempt to find a way to stop his rampage while dealing with their own problems of betrayal and hopelessness. Irredeemable was first published in April 2009 as Irredeemable #1 and ended in May 2012, after thirty-seven issues, eight collected volumes, and one special. Art on the series was provided primarily by Peter Krause. Krause left the series in September 2011 after twenty-four issues, and was replaced by Diego Barretto. A spin-off titled Incorruptible was released in December 2009, which follows one of the Plutonian's greatest enemies, Max Damage, on his journey to become a superhero in the wake of Plutonian's fall. Waid brought both series to a conclusion in May 2012.