Warning! Spoilers ahead for The Flash #784.
Comic books love to create mashups of two different characters, and it seems as if two different mashups of Batman and The Flash are destined to clash against each other.
Now that the event Dark Crisis has arrived, the majority of the Justice League is either dead or missing. Speedsters in the DC Universe believe that Barry Allen will be key to stopping the crisis, but he's missing. So they go on an adventure through the timelines in order to try and find him.
Related: Flash & Green Lantern's Savage Redesigns Are Officially Revealed
In one timeline, as seen in The Flash #784 by Jeremy Adams and Amancay Nahuelpan, Wally West's kids, Irey and Jai, travel to a reality that seems to have a dark version of the Flash called Night Flash. Although not much has been revealed about this character so far, he clearly looks like a mashup of Batman and The Flash, leaning more towards the Batman side. He even talks like Batman in that he believes the kids to be encroaching on his city and seeks to punish them for it.
The fact that this mashup character leans more towards Batman is in contrast to another mashup character that leans more towards The Flash. Red Death is one of the Dark Knights of the Dark Multiverse that came about out of the event titled Metal. This character is an evil Bruce Wayne whose stole The Flash's connection to the Speed Force. He then largely took up the Flash's identity with a costume leaning more in that direction compared to Night Flash whose costume looks more like Batman.
It's certainly plausible that more about Night Flash will be revealed in future issues, but it makes sense that instead of being a Bruce Wayne that stole The Flash's powers, he may be a version
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