For the past four ears, we've had many wild theories as to when and where we'd see the demon lord Mephisto in the MCU.

Marvel's "Ironheart" finally introduces Mephisto (Sacha Baron Cohen) to the MCU. But after years of delays, does it work?

After years of teasing and speculation, Mephisto has finally entered the Marvel Cinematic Universe. Played by Sacha Baron ...

Mephisto finally joins the MCU in Ironheart after years of fan theories sparked by WandaVision and Agatha All Along.

Wanda, Agnes, and Dottie in the second episode of WandaVision. Marvel Studios The actual first time we thought WandaVision was hinting at Mephisto as the super secret villain was in episode two.

Mephisto might finally be joining the MCU soon, paying off years of Marvel Studios teasing the demonic supervillain.

In the 'Ironheart' finale, Marvel's underworld villain finally surfaces—played by Sacha Baron Cohen, no less—but the reveal ...

Mephisto has finally arrived in the MCU, and the new villain should fight one of the franchise's most powerful characters after his debut set it up.

Ironheart brings Mephisto into the MCU (at last!), but who is the Marvel Universe's devil, which characters is he tied to on ...

With his introduction in the finale of 'Ironheart,' the Marvel Cinematic Universe has set the stage for long-awaited ...

With Mephisto finally part of the MCU, it's a good time to list the most powerful magic users the franchise has to offer.

Marvel Studios So WandaVision ended with no Mephisto. But that was not the end of the Mephisto theories. Because at the end of 2021, Spider-Man: No Way Home was hitting theaters.