Two compelling theories have surfaced to explain this anomaly. First, it is believed that the scepter struck Tony’s arc reactor, which is not biologically part of him. This crucial detail may have created a barrier, preventing the Mind Stone’s control. Second, a deeper dive into “Iron Man 2” reveals that Tony’s original reactor was poisoning him with palladium. In a desperate move, he created a new element inspired by Howard Stark’s research on the Tesseract, which may have shared properties with the Space Stone. If true, this could mean that the new element counteracted the Mind Stone’s influence, much like Black Widow used the scepter to close the Tesseract portal.