Dr Doom has faced the Challengers of the Unknown a couple of times, last in #783, and now the Atom’s come looking for revenge!
This was featured as a Behind the Scenes cover back in January.
Untold Tales #868 Atom vs Dr Doom
Page by page, panel by panel annotations of DC Comics' summer events and crossovers
Crisis on Earth-Prime 
I’m definitely personally impressed by how well this cover turned out Gary. Beautifully laid out. I definitely like Ray’s chances here, as I feel at least for this particular fight, Doom will underestimate Ray & be forced to bow out. Or Ray stalls him before the JLA shows up to help.
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