Avengers 3

I don't think he belongs in either. Unless Thor somehow lost Molnir and Doom managed to pick it up through his mystic arts. 
 
But, to counter that notion, I don't think we need a Fantastic Four reboot. They should just leave the FF untouched - they don't work in the cinematic universe because no one takes them seriously. Let him pop up in the second Avengers movie and collaborate with Thanos. Or heck, even let him FIGHT Thanos, but be on his own team.
 
"DOOM NEEDS NO ONE."

Doesn't 20th century fox have Dr.Doom's Rights.

@RainEffect said:

They should just leave the FF untouched - they don't work in the cinematic universe because no one takes them seriously.

Get out and never come back.

Hmm, I can't choose both.

iron man 4 with doom = WIN

No love for the Mandarin?

A cameo in either would make me very happy :).

I don't care what movie he's in just as long as his character's given some justice.

Neither. Not only can that not happen (for now), I don't want it to. I love Doom, but to me, he is a Fantastic Four villain. Yes, he has faced Iron Man and Thor before, but I think that they should keep Doom only in Fantastic Four movies.

Doom was a universal villain at a certain point, but he is always and forever a Reed Richards villain. Include him before the Fantastic Four reboot and say goodbye to the introduction of a realistic Doom. I can't have that, Sony aside.

Neither. A cameo, sure, but I don't think it's late in the game for Doom in those movies. If you're going to bring a major player into a movie, one of the earlier ones is best or, at the very least, allow the other movies to lead up to his grand entrance (with final scenes of Doom watching *insert hero(es)* on a monitor or from a distance).

While Thor and Iron-Man may be too late, the Avengers is still fairly fresh (I haven't been able to see Avengers yet, so if Doom is referenced, ignore this), he could make an appearance there.

Regardless, when/if they bring back Doom, I'd prefer a reboot from the FF movies. He looked great, but I prefer the Doom who relies on science and magic; not the cosmic energy Doom.

Just my opinion of course.

They should make a new FF movie (by Marvel this time), have Doom in that, and then bring Doom in for the third Avengers movie.

As of now, neither.

@RainEffect said:

They should just leave the FF untouched - they don't work in the cinematic universe because no one takes them seriously.

Get out and never come back.

Neither

I also agree with raineffect. There corny

Iron Man 4.

I want to see a war of prep between the two.

Would love to see Doom in an Avengers movie, seriously doubt it will happen though.

doom should be left out of both , he serves no purpose in either film .

I don't think we need a Fantastic Four reboot. They should just leave the FF untouched - they don't work in the cinematic universe because no one takes them seriously.

Doom should appear in a Fantastic Four reboot but not till the third movie of the trilogy.  I've got this down to a science, I know how I would handle a Fantastic Four movie trilogy......
 
The first should all be about their powers and how they cope with having such amazing abilities, the villain should be one of their lesser villains like Mole-Man or Impossible Man or (My personal pick) Mad Thinker. There should be hints of Doom in the background but no real appearance. He could appear in the background on a news report or At most he'd appear in the after credits scene in the shadows or something like that.  So basically the first film would show his rise to power in Latveria. The main theme would be about "responsibility" and how the fantastic four deal with using their powers in responsible ways.
 
The second should up the ante and not have the Fantastic Four battle one villain but a team of villains ( The Frightful Four), this time Doom would make an appearance but he wouldn't be the focus of the film. Basically it'd be a long cameo at most but at the end it's revealed he was the one pulling the strings. Then set it up for him to be the big bad guy in the end. This shows that Doom has ulterior motives and that he's a good con artist cause in the end he'd get whatever item he wanted. The main theme would be "secrets" and is it right to keep them? Mainly the secret being did Reed Richards plan on them flying through the cosmic rays and getting superpowers? This would cause the Fantastic Four to temporarily break up because most of them have been keeping secrets from each other and they can't trust each other. Of course they'd get together in the end and solve their problems.
 
The third film would be Doom as the main villain. It'd be all about the Fantastic Four figuring out what his plan is and would toy with the whole science vs magic debate. Is magic stronger than science or is Magic just science most people do not understand? Doom would the main bad guy and the Fantastic Four's biggest threat. The main theme would be "Past Mistakes", it was a past mistake that made Doom what he is, it was a past mistake that made the FF what they are, and it was a past mistake that created the Reed Richards and Doctor Doom rivalry. It's all about making up for past mistakes and what happens if you let past mistakes corrupt you. I picture the film ultimately ending with Doom appearing to have been killed but with strong hints that he's still alive planing his revenge. Kinda like Red Skull's so called "Death" in the Captain America movie. He'd be blown up or something and all that would be left is his mask, but anyone with a strong eye for detail would know that he was actually teleported to another dimension or something like that.
 
That's what I would do.

@RainEffect

The FF don't work in the cinematic universe? Poppycock. The Cinematic Universe has a strong cosmic influence, and the FF (and associated characters - Galactus, Annihilus, Silver Surfer, Skrulls, etc.) bridge the gap between earth-bound and cosmic heroes pretty well. The FF mythos would fit into the cinematic universe so darn perfectly that sometimes I weep over Marvel lacking the rights to include them.

Only if they completely disregard the Dr Doom form the terrible Fantastic Four movies and start him fresh. Avengers 3 would be my first pick, Iron Man 4 would be my second.

I also agree with raineffect. There corny

It can't be done. Fox

It can't be done. Fox