So apparently SwapFell is FellSwap and people are just being stupid by mixing up the two- SwapFell is UnderSwap but everyone is edgy (like how UnderFell is just edgy UnderTale), to tell this AU from the other, the Sans from this AU is wearing a dark gray-ish blue scarf/bandana on his neck (This Sans’s nick-name is usually Black or BlackBerry like Blue is Blueberry a.k.a. Swap Sans), search up SwapFell for its differences
Person: *Pulls up a picture of FellSwap Sans* SwapFell Sans is my favorite.
Me: That isn’t SwapFell, That’s FellSwap.
Person: What?
Me: I know, I didn’t know before either, there is a FellSwap and people mistake SwapFell for FellSwap all the time without even knowing about its existence.
Person: Oh-