In Castle Doom

The team learns that Professor X has tracked Nightcrawler to Castle Doom, but upon trying to transport the heroes are sent to Murderworld by a spell of Baron Mordo. The final level is set in Latveria, home of Dr. Doom, and whilst there they defeat the corrupted evil heroes, evil clones of the heroes, many clones of the Fantastic Four, and confront Dr. Doom. The heroes use the two devices obtained earlier to weaken Doom and upon being struck down by the heroes, Doom is blasted by a bolt of lightning sent by a rejuvenated Odin, leaving nothing but his mask behind.