Mephisto Watch is back on the menu! After WandaVision sent fan theories into overdrive, Agatha All Along finally mentioned the long awaited Marvel villain. What does this mean for the future? Who exactly is Mephisto? Kyle Anderson has you covered with all those questions and more on today's Nerdist News! Follow Us: Facebook facebook.com/nerdist Twitter twitter.com/Nerdist Instagram instagram.com/nerdist TikTok tiktok.com/@nerdist Image: Marvel #NerdistNews #Marvel #mephisto #Agathaallalong