User blog:AlmightyFreeman/Infinity War Invading Force

Okay guys, I have a question. In all the Avengers movies, there's always an invading force. Chitauri in the first, Ultron Sentries in Age of Ultron. So my question to you is, who do you think is going to be the invading force in Infinity War? I personally have no idea. If you have a theory, state it in the comments.