In the 2018 event Flash War, Zolomon sends the Renegades to arrest Iris for Thawne's death, as part of a plan to instigate a conflict between Barry and Wally. It is revealed that, after being freed from prison by Captain Boomerang in Brightest Day, Thawne broke Zolomon out of prison and took him to the 25th Century, accepting his offer to work together. The pair secretly took over the Temporal Courts and formed the Renegades, but eventually had a falling out over a difference in motives, culminating in Thawne returning to the past. Thawne's repeated deaths infuriated Zolomon, triggering a change in his own motives. Zolomon eventually discovers that Thawne himself was responsible for his transformation into his successor Zoom, with Thawne having given the Clown the gun with which he killed Zolomon's father-in-law and changed the course of Zolomon's history.