While the Marvel villain did pop up on 'Ironheart,' he never dropped by the more obvious 'WandaVision' or 'Agatha All Along.' ...

After years of fan theories and online rumors, Mephisto has finally appeared in the Marvel Cinematic Universe. The famous Marvel villain showed up in the final episode of Ironheart, the Disney+ series ...

After years of fans waiting and guessing, Marvel villain Mephisto has finally joined the Marvel Cinematic Universe. He showed ...

Ironheart was the first, but not necessarily the last time we'll see Sacha Baron Cohen's Mephisto, Marvel's devil incarnate.