[2] Mahnke also worked on the critically acclaimed prestige one-shot Batman: The Man Who Laughs with writer Ed Brubaker.

[3] His work also includes titles such as Major Bummer, Superman: The Man of Steel, Team Zero and Justice League Elite.

[5] Mahnke was an important collaborator with writer Grant Morrison on DC's event series Final Crisis, pencilling the Requiem one-shot and the two-issue Superman Beyond 3D tie-in.

Mahnke also pencilled the final pages of the main series' 6th issue featuring the "death" of Batman, and replaced artist J. G. Jones entirely on the series finale issue #7 over concerns of Jones' speed.

[6] Starting in July 2009, Mahnke became the ongoing artist for DC's Green Lantern with writer Geoff Johns, right at the beginning of the Blackest Night storyline.