Because it was somewhat a fluke that it didn’t, how much trouble would Iron Man have caused for the rest of the Avengers? Keep in mind that they arrived after the wormhole opened and Loki’s army poured out.
The cure for the mind control, per Dr. Selvig and Hawkeye, is head trauma, so at some point they’d bring Iron Man back into the fold, but could any of them save for Thor and Hulk survive?
Well, he can fly better than any of the others, he’s as tough as any of the others and he can shoot lasers. But isn’t the suit really controlled by Jarvis? Mind control doesn’t work on computers.
Tony wouldn’t have just charged in to attack. Since the others kept their basic personalities, etc., just skewed to working for Loki, Tony would have waited until the right moment to take down Thor and the others. And the whole place would have ended up getting nuked.
The suit *can *be controlled by Jarvis, but as far as I recall from any of the movies, there’s no indication that Jarvis can override or ignore Tony’s control. There’s also no way to know that Jarvis would be able to differentiate between a intact or mind-controlled Tony and thus know when to take control. Absent any of this evidence, I’m going with the idea that if Tony were under Loki’s control, the suit would still be under Tony’s.
Hmm… Tony always has a couple plans ready to go. He could have put a safety in with Jarvis such that it would keep him out of trouble if his brain went haywire. Since it never was needed, we don’t know how it would have shaken out.
I doubt it. Remember from the first movie, Jarvis was routinely arguing with Tony during suit development - “Sir! There are terabytes of calculations to perform before an actual flight” but Tony went ahead anyway. Plus, Tony knew that SHIELD was able to hack into Jarvis, from Agent Coulson’s appearance at the beginning of the movie. So it’s extremely unlikely he’d give Jarvis any sort of veto power on the suit. Ultimately, there’s no one Tony Stark trusts more than Tony Stark.
That bugged me, since it was also established that Stark’s hack-fu was superior to SHIELD’s. At least, until I realized how they’d done it. They used the oldest trick in the book: They talked someone with authorization into letting them in. Note that Pepper wasn’t at all surprised to see Phil (“Phil”? His first name is “Agent!”).
Even if there was a way for Jarvis to override Tony’s control, Tony still has total use of his faculties - it would only take a few minutes for him to wrest control back from the system he designed and installed. But I don’t see Tony putting anything into his armor that would let anyone override him - he’s too much of a control freak to do something like that.
Also, it wouldn’t make for a very good action sequence.
What I could see happening is Jarvis subtly messing with Tony’s aiming, so that he keeps just missing kill shots against his friends, until the Hulk or Thor gets in a strong enough punch to ring Tony’s reset button.