Talking to Entertainment Weekly at SXSW, Joss Whedon talked about Loki’s Army, saying that they ARE NOT the Skrulls or Kree, and reveals why.
“I will say only this: It is not the Kree or the Skrulls. Those two aliens are Marvel mainstays and have enormous backstories. They have a big life of their own that just could not be contained in a film where I already had seven movie stars.”
“The Skrulls — they can shape change. That’s a whole thing. I’ve already got Loki. He’s got magic. Once you got magic along with your Iron Man and your Black Widow — it’s a real juggling act.”
They then asked him why everyone was being so coy about who these aliens really are and was it because they weren’t including Skrulls or Kree, or if they were hiding another revelation. Unsuprisingly, Whedon dodged the question with this:
“What’s probably happening is that I just said something that Marvel didn’t want me to. It’s weird to be fired so late!”