On paper, the Mephisto reveal is an exciting one for MCU fans who have been begging for it since WandaVision. Even if his appearance in Ironheart isn't comic book-accurate like it would have been in a show like WandaVision, it's still fitting given the show's broader conflict between magic and technology.

Years after he was first teased, a Marvel villain powerful to change everything has finally arrived in the MCU.

At its core, Ironheart explores how far people will go to make up for their past failings — and how those efforts can go wrong. Even a noble goal can lead someone down a dark path, the show suggests,