Neither of their settings in the Star Wars universe have been revealed yet, but now Johnson has confirmed what definitely will not be involved.
Speaking with The Observer, the director said: “I think that the fun and challenging part of it is to dive in, figure out what’s exciting and then figure out what it’s going to be.
“We’re doing something that steps beyond the legacy characters.
“What does that look like? To me, the blue sky element of it is what was most striking about it.”
Johnson added: “I know the way that I’m coming at it and what’s fun about it for everyone in Lucasfilm is figuring out, ‘what’s the next step?’

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“It really makes you think and figure out what the essence of Star Wars is for me and what that will look like moving forward.”
By legacy characters, Johnson means Star Wars characters fans know and love well.
So presumably that rules out all the main players across the three Star Wars trilogies.
Back in April, Johnson teased: “I’m looking at everything [in Star Wars lore] right now.
“I’m honestly just in this very nice ‘OK, what is this thing going to be?’ phase. Really, the only goal I have is to think about how Star Wars made me feel as a kid. And that’s it.
“I’m trying to capture: what is that, if it’s not iconography that we recognise, necessarily, from the original trilogy? What captures that spirit? What can be that for a kid who’s never heard of Star Wars?
“It’s getting back to the very fundamental questions of what makes this what it is.”