What If writer reveals the two things that were "off limits" in the upcoming Marvel series

If you’ve seen the trailer for What If…?, the upcoming Marvel Studios animated anthology series, then you might expect anything and everything to be on the table. But that’s not quite true.

Head writer A.C. Bradley tells GamesRadar+ that two things – one serious, one slightly less so – were "off limits" for the creative team.

"One was we couldn’t do anything that the movies or TV shows were already doing. So that let us go to weirder and stranger places," Bradley says.

That, seemingly, extends to what Kevin Feige and company have in store for Marvel Phase 4. Bradley has already revealed one her scrapped ideas was eerily close to what will eventually become the plot for Guardians of the Galaxy 3 in 2023.

The second is a little more out there. And by out there, we mean in a galaxy far, far away.

"Despite my damndest, I was not allowed to use Star Wars characters. I tried many times; they kept reminding me that Luke Skywalker is not an Avenger," Bradley says, with tongue firmly placed in cheek. Having said that, the desire to at least try and throw in some mind-blowing crossovers appeared sincere on the writer’s part.

One thing that certainly isn’t off limits is Hayley Atwell’s Captain Carter. The alternate universe Super Soldier is "going to be the character we would revisit in every season," according to a CBR interview with executive producer Brad Winderbaum.

For more on the MCU’s future on the small screen, check out our guide to new Marvel TV shows.