Agatha All Along Special Name Drop - Doctor Strange of Mephisto

Agatha All Along comes out tomorrow. And one of the rumors has been around a question that Jamie Jirak asked to the producers of Agatha All Along. Jamie has seen the first four episodes, and says that there is a name drop of a character that people expected in WandaVision. So who might that be, I think it's a two horse race, Doctor Strange of Mephisto, but which will it be?
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