If you are working on Mystique’s Awakening Challenges in Fortnite Chapter 2 Season 4, you are going to need to track down a phonebooth. One of her challenges is to use a phonebooth to put on a disguise.
As some people might be searching for this before unlocking the skin, you will need to hit level 80 in the Battle Pass to unlock Mystique and level 86 to unlock the Awakening Challenges. Don’t forget to equip the skin for the match or you will not be able to complete it.
Phone booths are tied to henchmen locations, and outside of the Stark Robots, there is only one other type of Henchman in Fortnite at the moment, and they are found in Doom’s Domain. We checked Stark Industries, but couldn’t find a phone booth there, so it doesn’t seem like you can disguise yourself as a Stark Robot at the moment.
Make your way to Doom’s Domain and you will find the phone booth to the south of the large statue of Doom. Keep in mind, you also need to visit this statue for one of Doom’s Awakening challenges. Jump into the phone booth by interacting with it, and Mystique will don the disguise and finish up the challenge.
After completing all Mystique’s Awakening challenges, you will get access to a built-in emote that allows you to copy the skin of the last person you eliminated by using it.