Honestly, I thought I could no longer be surprised by the off-the-wall collaborations between Fortnite and various other IPs. At this point in Fortnite’s very lucrative lifespan, the general rule of thumb seems to be, “If it’s popular, it’s gonna end up in Fortnite.” Damn near every Marvel Cinematic Universe character has made an appearance, countless musical artists have held in-game concerts, and Epic has always been very good at making sure that whatever the internet is obsessed with at…