One behind-the-scenes change to WandaVision ensured its secret Iron Man meaning was perfect. Although Tony Stark is already dead during the events of WandaVision, the post-Avengers: Endgame story for Scarlet Witch still includes several important connections to Iron Man. They range from SWORD utilizing old Stark technology to revisiting how Wanda Maximoff's Marvel Cinematic Universe origin story started because of a bomb made by Stark's company. By and large, WandaVision handled its Iron Man ties well, although one only truly worked after a change occurred during development.
Even before Marvel Studios confirmed plans for WandaVision in 2019, it was reported that Elizabeth Olsen would return for the Disney+ series and dive deeper into the past and present of Scarlet Witch's story. Tony Stark and Wanda Maximoff share the screen in multiple MCU films, but they always had a strained relationship. This was largely due to a Stark Industries bomb killing Wanda's parents when she was a child. WandaVision went as far as to show her memory of this event and insinuate that Scarlet Witch has forgiven Iron Man for creating the weapon that killed her parents. However, the series also included a secret subtle reference to this life-changing event and Tony Stark's involvement.
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During WandaVision episode 1, a Stark Industries Toast-Mate 2000 is featured in a fake commercial created by Wanda's memories. These commercials repeatedly brought up past trauma for Scarlet Witch as the series unfolded, and the toaster represented the bomb that killed her parents. Marvel teased this by having a blinking red light on the toaster that looked and sounded just like one of
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