Listen, we all know AO3 is down. Luckily, Halloween is the perfect place to get in some alternate-universe shenanigans (with delightfully queer undertones). Yes, we are talking about Marvel’s Robert Downey Jr., who plays Doctor Doom in the upcoming Avengers: Doomsday, and Pedro Pascal, who plays Mister Fantastic, swapping costumes and stepping into one another’s spandex for a night. If we can’t read fanfic on the internet, we’re glad the universe (and RDJ and Pedro Pascal) are providing it to us live and on our screens.
Robert Downey Jr. and Pedro Pascal took to Instagram to reveal their Doctor Doom/Mister Fantastic role reversal (which has surely launched a thousand fics). Is this what Sue Storm was talking about in the Avengers: Doomsday trailer when she notes that RDJ’s Doctor Doom “used to be different?” In any case, both actors look delighted as they reveal their shenanigans in what RDJ terms “cross-dressing.” We’re obsessed with this costume swap.
We’re Obsessed with RDJ and Pedro Pascal’s Halloween Adventures
Robert Downey Jr.’s Mister Fantastic and Pedro Pascal’s Doctor Doom even took their show on the road and frolicked with trick-or-treaters on Halloween. You can catch some glimpses of their adventures below. They sure do look like they’re having a blast.
We bet somewhere Marvel scribes are already working on “What If…?” Doctor Doom and Mister Fantastic traded identities and went trick-or-treating together on Halloween. But thankfully, in this part of the multiverse, we got to witness it really happen. Honestly, we love when actos have some fun with their roles. This kind of marginalia really pulls us into a franchise and gives us something to connect with emotionally. More actors having a good time with their roles in 2k27, please!
We’ll See Pedro Pascal and Robert Downey Jr. in Avengers: Doomsday
Sadly, there will be much less fun when Avengers: Doomsday hits our screens. Robert Downey Jr.’s Doctor Doom is ready to destroy all universes for his own aims. And Pedro Pascal’s Mister Fantastic will be one of (many) heroes who try to stop him. But maybe teaching Doctor Doom about the joy of Halloween was always the key to saving the world. We’ll find out when we see RDJ, Pedro Pascal, and the rest of the gang in Avengers: Doomsday, releasing on December 18, 2026. You can snag tickets today.