Four years after WandaVision made "Mephisto" the hottest search term Google had ever seen, Ironheart on Disney+ finally introduced the demonic villain Mephisto. He's Marvel's analogue to Satan, played Sacha Baron Cohen,

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?