On Friday morning, Marvel made a huge announcement on Twitter, and fans are not happy.
Marvel Entertainment is joining forces with Northrop Grumman, an American global aerospace and defense technology company, and the world's fifth-largest defense contractor.
We don't know much yet, but it looks like there will be a promotional comic featuring the Avengers and "Northrop Grumman Elite Nexus," or N.G.E.N.
The arms manufacturer generates over 20 billion dollars in revenue a year.
Marvel Entertainment didn't reveal anything more about the partnership, and to learn more the company encouraged fans to head to their New York Comic Con booth on Saturday afternoon.
The partnership comes as a surprise to many Marvel fans.