A fter years of speculation, teases, and countless fan theories, the MCU has finally pulled the trigger on one of its most elusive and long-awaited characters: Mephisto. The demonic villain made his official debut in ‘ Ironheart ’ Episode 6.

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

Fans have been wondering if/when/how the devilish character would ever arrive onscreen since the premiere of WandaVision four and a half years ago, and Ironheart creator Chinaka Hodge tells Entertainment Weekly that the decision to include that long-awaited moment in this series was not hers "alone."