EntertainmentTVAction ShowsMarvel TV ShowsAgatha All AlongMarvel’s Agatha All Along creator says that Mephisto reference is “a nod” to all of those WandaVision fan theoriesWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. EntertainmentTVAction ShowsMarvel TV ShowsAgatha All AlongMarvel’s Agatha All Along creator says that Mephisto reference is “a nod” to all of those WandaVision fan theoriesWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. (Image credit: Marvel Studios) Warning – the following features spoilers for episode 3 of Agatha All Along. It finally happened –Mephistohas been name-dropped in the MCU! During the third episode of new Marvel show Agatha All Along, titled ‘Through Many Miles of Tricks and Trials’, the fan-favorite …