There have been rumors surrounding a mysterious Doctor Doom project in the MCU. The actor portraying the Marvel villain may have been accidentally revealed. While recording an episode of the Howard Stern Show, Stern was wearing a hot mic and said, "I told you, I'm going to do Doctor Doom. That's the thing. But believe me, I'm fucking miserable about it... I called Robert Downey Jr. and I was asking him acting techniques... Do you have a number for Jon [Favreau]?" Until Marvel confirms Stern as part of the MCU, this is all speculation, but who would be the ideal actor for Doctor Doom?