Did you know that in Avengers: Age of Ultron?

Whenever Ultron gets angry in the movie Avengers: Age of Ultron, something changes in his face, but few people notice it. If you pay close attention, you’ll see that the sides of his face retract, making his cheeks disappear. This gives him a more frightening look, almost like a skeleton. And his mouth glows, just like in the comics, which makes him look much more like his original version, where his face is hollow and sinister.