‘Avengers: Doomsday’ Theory Has Fans Convinced Doctor Doom Secretly Appeared In Trailer Footage

Have fans already met Doctor Doom? A theory has convinced fans that the villain of Avengers: Doomsday may have already appeared in a trailer. With the fourth teaser trailer for Avengers: Doomsday officially online, fans have begun to go over all of the footage with a fine tooth comb. This theory is largely due to a recent Instagram post where the Russo Brothers urged fans to “pay attention”…

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