Undyne X Alphys FanFiction

I'm in Underhell!

I'm in Underhell!

F/F
F/M
M/M
G
Updated
13.04.2025
Fandom
Undertale (Video Game) Undertale
Characters
Frisk (Undertale), Sans, Papyrus, Salem - Character, chara - Character, Toriel, Alphys, Undyne, Asgore, Gaster, Mettaton, Grillby,
Tags
Romance Fanfiction undertale - Freeform Underfell trigger - Freeform
Welcome Salem into the world of Underfell. An alternate universe of Undertale where everyone is tsundere evil... And what are evil monsters if they aren't trying to kill you? Now, Salem should be scared for her life... But she's not. She might as wel...