Mephisto debuts in Ironheart, sparking fan theories. His powers include reality bending and control over life. He grants Hood abilities and demonstrates immense strength. Some speculate he is stronger than Thanos.

Between Riri's new deal with Mephisto, Natalie's shocking resurrection, and Parker's return in the mid-credits scene, there's a lot left hanging by the end of Ironheart's first season. And the creator hopes to continue exploring those stories in future seasons of this show rather than in other MCU projects.

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