Love the animation here. I cannot deny the fact that you put alot of effort and work into the animation. Especially the part where the boxes with different aspects to each superhero shows up. Especially Ironman's.
The main problem I have is the anatomy. They all look a bit too young, which is a common problem when drawing in Anime style. The thing about anime is that sometimes, characters tend to look the same if body or face. Which is why it's usually best to study the anatomy a bit and also try to stylize so that way you won't run into that problem.
It's a great job, I'll admit but it needs some fixing up to do.