The Marvel Cinematic Universe is under a microscope right now, and that’s because Avengers: Infinity War is coming out this week. Not only is excitement for the superhero mash up at a fever pitch, other Marvel movies are getting in on the action. One of which is Captain Marvel.

Captain Marvel will not only take place in the ’90s – a decade no other MCU movie has explored – but it will also bring back four key characters.

That in and of itself isn’t news. A couple weeks back it was reported Nick Fury, Agent Coulson, Korath the Pursuer and Ronan the Accuser would be returning, but the reason wasn’t revealed. 

During a press event, Marvel president Kevin Feige told io9 it’ll be all about exploring the backstory of the Kree (who are the enemies of the Skrulls, which the movie will be dealing with). Here’s Feige’s exact response:

It was the backstory of those characters crossing over into Kree mythology, and Kree lore, that just made it work. And I always think it’s fun to see, most obviously with Fury in Captain Marvel, but also to a certain extent you’ll see with Ronan and Korath, characters the way they were before they became the icons that you have seen in other films. And it’s just fun to see people in different environments.

With the Skrulls being an important part of Captain Marvel, it also seemed like a great way to integrate other mythology associated with the characters, which just happens to connect to another MCU movie. Both Ronan and Korath were in Guardians of the Galaxy.

Nick Fury and Agent Coulson have been in a number of movies in the universe. It’s unclear how they will impact Carol Danvers’ specific storyline, but it would tie in neatly with Fury’s Avengers initiative. Keep in mind that in the ’90s, the only other super human known is Captain America. One doesn’t make a group, but two does.

Also, Samuel L. Jackson will be without the eye patch this time around, which adds to the whole aspect of seeing these characters in different envioroments.

This all sounds mighty exciting, but it’s going to be a while before we see it in action. Captain Marvel doesn’t arrive in theaters until March 8, 2019. In the meantime, Avengers: Infinity War should provide a much-needed distraction when it opens on April 27.