I've been wondering this for a while now, so I decided to ask. (Incase you don't know: AU means Alternate Universe.)
Undertale has AUs like: Underswap, Underfell, Outertale, Storyshift, etc. Steven Universe has such AUs as: Momswap, Opal, Highschool, Bad Pearl, etc.
Are there AUs where: two close charcters switch places, everyone has their opposite personality, or Pam marries Roy?
Again, just wanted to know!