According to the theory, Tony Stark was never actually the biological son of Howard and Maria Stark. Instead, the Starks supposedly lost their child and secretly adopted another baby, who eventually became the Tony Stark audiences have followed throughout the MCU. Another variation suggests Jonathan Majors' Kang erased Victor Von Doom from the multiverse to eliminate a powerful rival before the events of the MCU. Under that theory, Tony's recurring visions of catastrophic futures throughout the MCU weren't simply anxiety or intuition. If Tony Stark turns out to have been a Victor Von Doom variant all along, it could fundamentally reshape his entire MCU journey.