AUs that cover the backstories of characters and lore or change the backstories, leaving most other things the same.
“Handplates is an origin story based AU created by Zarla. It follows W. D. Gaster and the...Handplates
“"* Don't get me wrong, but those monsters used to be nice but something happened that will...BeforeFell
“The owner received a permanent ban. Their AU will remain here for those who wish to read it. Is...Sister Truth