The Ironheart finale really showed that the devil was truly in the details. The last episode for Season 1 of the Disney+ Marvel series finally revealed Mephisto (Sacha Baron Cohen), the long-awaited demonic villain from Marvel Comics. The episode started with Parker (Anthony Ramos) finally explaining how he got his mystical powers. Turns out, the hood is from a demon, which he (and eventually Riri) believes to be Dormammu. But when Riri ( Dominique Thorne ) meets the demon herself, he reveals he’s actually Mephisto—and he wants to make a deal. Riri asks to bring N.A.T.A.L.I.E., the A.I. she created and modeled after her deceased friend (Lyric Ross), back to life. In the final battle with Parker, she couldn’t keep N.A.T.A.L.I.E. and the magical armor upgrades from her mysterious training with Zelma Stanton (Regan Aliyah). But instead of reviving the A.I., Mephisto brings back the real Natalie. And as a consequence, the magical (and nasty-looking) veins that once covered Parker’s back...