We certainly haven't had any shortage of Avengers: Age of Ultron details over the past few days, including Ultron's plans for world annihilation, and Vision's origins. A new report from Entertainment Weekly's Comic-Con issue includes new details regarding Vision's colorful appearance, Robert Downey Jr.'s thoughts on Paul Bettany being cast as Vision, and Joss Whedon offering more details about the twins Quicksilver (Aaron Taylor-Johnson) and Scarlet Witch (Elizabeth Olsen).

While it isn't known when fans will get their first look Vision in the movie, Entertainment Weekly was shown test footage of Paul Bettany's make-up on the set, which they described as follows.

"While his face seemed to be a little more on the purple side of the spectrum than orange, the overall look of the synthezoid has a slightly more technological edge than the original 1968 introduction. He's a bit more Borg and a little less Crayola."

It's possible that fans may get their first look at Vision during Marvel's Comic-Con panel, but that hasn't been confirmed yet. While Joss Whedon would only say that "it's not coincidence" Paul Bettany was cast as Vision, after voicing Tony Stark's computerized assistant J.A.R.V.I.S., Robert Downey Jr. hinted that everything in the Marvel Cinematic Universe happens for a very specific reason.

"Things only happen arbitrarily in Kevin Feige's Marvel universe by mistake, and I think he's maybe made two mistakes and they weren't really in the movies. They were more in like the easter eggs early on. Things that he didn't have as much final say over but would nowadays. Yeah, I don't think Kevin would let that happen. Again, it's like if you think about the five different ways that [The Vision] could come together, this one's definitely the most interesting of the five. I was running other scenarios and I've seen it progress over drafts. It was just kind of really good, right from the start."

Joss Whedon teased earlier today that Quicksilver and Scarlet Witch are on "Team Ultron," with the director elaborating on how the Avengers are completely unprepared for siblings with their powers.

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"With the [first] Avengers, everybody pretty much had the power of being able to punch somebody. And now we have a woman who can get inside your head and move objects, and a boy that can move faster than anything, and a robot [Ultron] who can self-replicate and is out of his mind. So all of sudden, it's a darker, weirder, tougher world that they're living in."

Quicksilver and Scarlet Witch are interesting characters because both Marvel and 20th Century Fox share the rights, with a few stipulations. Marvel can't mention the siblings' mutant history as the offspring of Magneto, while Fox can't address their Avengers' stories from the comics. Quicksilver was played by the scene-stealing Evan Peters in 20th Century Fox's X-Men: Days of Future Past, but Aaron Taylor-Johnson revealed there is no rivalry between the productions.

"There's no rivalry at all. I'll see it, but not see it from the standpoint of going 'I've gotta do it better than that,' or to do it differently in any way. What we're doing is from another standpoint."

He also added that Quicksilver and his sister are nomadic gypsies, while adding that the siblings have a yin-yang type of relationship.

"They're gypsies in a way. They're romani. They're sort of like travelers. They're very yin-and-yang in that twin sense. In his power, he's physical and she's psychological. My character is very much on the frontline, but he can be quite emotional. You see this beautiful tenderness between them. When you look in the comic books, you see a lot of the time that she's always sort of mothering him. He's like the father figure and she's like the mother figure. Emotionally, she can stabilize him, and he protects her physically, vice-versa. So they have this beautiful connection and it's kind of them against the world."

While he wouldn't go into specifics, Joss Whedon hinted that the brother and sister have a deep-seated hatred for the Avengers.

"I'm interested because there's familial issues with that kind of resentment. You can sort of go deeper and I can play with their relationships and I can play with attitudes. Scarlet Witch and Quicksilver hate them with a fiery hate."

Elizabeth Olsen also addressed her powers, which she has not been able to control yet.

"The reason she's so special is because she has such a vast amount of knowledge that she's unable to learn how to control it. No one taught her how to control it properly. So it gets the best of her. It's not that she's mentally insane, it's just that she's just overly stimulated. And she can connect to this world and parallel worlds at the same time, and parallel times."

The actress is the younger sister of twins Mary-Kate Olsen and Ashley Olsen, revealing that she drew on her relationship with her older brother to play Scarlet Witch, and watching how her older sisters interacted with each other.

"My understanding of twins is that they always balance each other out. When one's high, the other one's low. When one's sick, the other one's healthy. That happens, I think, a lot more often than not when people are really close as twins."

There is also a hint that these siblings may be too close, and although it isn't specifically addressed, there are allusions to their unique relationship, according to Elizabeth Olsen.

"In the comics, every time you see an image of them, they're always holding each other's hand and looking over each other's shoulder. They're always so close, it's almost uncomfortable. Aaron and I have been playing a little bit with those kinds of images just for ourselves."

What do you think about these new details? Hopefully more Avengers: Age of Ultron information will be revealed during Marvel's Comic-Con panel next week, so stay tuned for more information.