Tales of the Mineshaft is a concept AU created by Sooshirohl, the same person who created the concept AU "Animators Down Under."
This AU has popular Minecraft/Former Minecraft Youtubers taking the place of the Undertale characters.
don't ask why he made this.
The Roles are as listed :
Napstablook: DeadloxMC (DeadloxMC)
Sans: FuriousDestroyer (PopularMMOS)
Papyrus: GamingWithJen (PopularMMOS/SuperGirlyGamer)
Undyne: AntVenom (AntVenom)
Mad Dummy: BajanCanadian (BajanCanadian)
Alphys: Aphmau (Aphmau)
Mettaton: TrueMU (TrueMU)
Muffet: ThnxCya (Thnxcya)
Asgore: CaptainSparklez (CaptainSparklez)
Asriel: stampylonghead (stampylonghead)
Gaster : SkyDoesMinecraft (SkyDoesMinecraft)