Curious about all the hidden details in Ironheart Episodes 4 to 6? As the series dives deeper into dark magic, legacy tech, and supernatural forces, Marvel packs the final episodes of Ironheart with major Easter eggs, comic callbacks, and the long-awaited debut of Mephisto in the MCU.
Here’s a full breakdown of the Ironheart Episodes 4–6 Easter eggs with Mephisto and key Marvel references explained.
List of key Easter eggs in Ironheart Episode 4-6
Stark Tech and Kree Energy Reference
Riri analyzes Parker’s cloak and eliminates possible energy origins. She says, “It’s not Wakandan, Kree, Stark, or Pym,” referencing key MCU technologies.
Obadiah Stane’s MCU Legacy
News coverage calls Obadiah “a mentor to Stark,” ignoring his villainous role in Iron Man. This Ironheart Easter egg reminds fans how SHIELD covered up his actions with a plane crash story, as told in Iron Man 2.
Shuri and Wakanda Connection
Natalie urges Riri to “call Shuri,” a direct tie-in to Black Panther: Wakanda Forever, in which Riri and Shuri first met.
Zelma Stanton and Kamar-Taj
Zelma mentions Kamar-Taj as her “reach school.” She and her mother, Madeline, a dropout, connect Riri’s case to dark magical forces, including Dormammu.
Galactus Nod
A small but interesting Ironheart Easter egg comes when Riri jokes about Dormammu possibly wanting “to eat the planet,” a possible wink to Galactus, the cosmic devourer set to debut in The Fantastic Four: First Steps.
Mephisto Debut
Sacha Baron Cohen plays Mephisto, revealed in Episode 6. He offers Riri a Faustian bargain, promising her the life she wants at the cost of something she will not miss.
Kaecilius Connection
Zelma compares Parker’s demonic scars to Kaecilius’ from Doctor Strange, indicating Dormammu’s potential role.
Comic-Accurate Ironheart Suit
Riri rebuilds her armor using pieces of her stepdad Gary’s 1972 Plymouth Barracuda and powers it with magic, guided by Zelma’s spells. The suit’s red-and-black palette and heart-shaped arc reactor mirror the comic book design. This is a more subtle Easter egg in Ironheart.
Star Trek References
Xavier finds a note from Riri with the Starfleet logo. They debate who she resembles more—Spock or Uhura.
Deal Echoing Spider-Man’s “One More Day”
Riri agrees to Mephisto’s offer to bring Natalie back, stating that the cost must only affect her. The deal mirrors Peter Parker’s comic storyline One More Day, where he bargains with Mephisto to save Aunt May. Cracks start forming on Riri’s arm, symbolizing the price of her decision.
