Mephisto will have a major story in Agatha All Along and the MCU and this is now confirmed by Marvel Studios! Agatha Show-runner Jac Schaeffer has confirmed that Mephisto isn't just a wink and nod but ...
After years of supposed Easter eggs that weren’t really Easter eggs and rampant fan speculation, the third episode of Agatha All Along confirmed that the demon lord Mephisto exists in the MCU.