So SwapOut is Swap Papyrus, who is stuck in genocide route then he uses the machine thing and somehow gets into Undertale, Which meant Swap Pap sees Swap Sans, UT Sans, and UT Pap died
Swapout by ZKCats
Undertale: Disbelief by Flamesatgames
Underswap by Popcornpr1nce
Undertale by Toby Fox
Next up
Indie-Pendence Trio: Undertale Alternate Universe VOL. 1
See you, 18/4/2025
FUSION
ten years
What my friends think when I said I did undertale au crossover with other indie games
Happy 10th Anniversary, Undertale! 
Bendy Undertale Talk
Indie Ambitious Duo (Cuphead X Undertale Comic) Intro + Phase 0.5
The side story of Undertale: Independence. Time and space collide, leading to a team-up between Cuphead and Papyrus.
happy silksong day
Update: The Progress of the comic has become even slower. After the new IbisPaint Curve Line Update
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