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This article or section is about the Knightmare future. This is a potential future that may not necessarily follow the primary timeline. |
The Cosmic Treadmill is a powerful treadmill built by Cyborg using a Mother Box in a dark future. It was used by the Flash to travel back in time and stop Darkseid and Superman's conquest of Earth.[1]
History[]
Warning Bruce[]
In an effort to prevent the dark timeline to ever happen in the first place, what's left of the Justice League devised a plan for Flash to travel back in time to warn Bruce of Lois Lane's death in the Batcave. They placed the cosmic treadmill in the Batcave and attempted to travel back in time just before Darkseid kills Lois. Unfortunately, Flash went too far back in time and met with Bruce in 2015.[2][1]
