The Alphamalg Series [Undertale][BDSM][Bestiality][BodyHorror][S&M][Tentacles][GangRape]

https://www.fanfiction.net/s/11832553/1/Alphys-Fornicates-With-The-Amalgamates

https://www.fanfiction.net/s/11880207/1/Alphys-Fucks-Her-Own-Pets-2-Alphamalg-Boogaloo

https://www.fanfiction.net/s/11883058/1/An-Alphamalg-Sleepover

https://www.fanfiction.net/s/11893642/1/The-Great-Alphynamalg-Orgy-Of-16

https://www.fanfiction.net/s/11963260/1/Alphamalg-Origins-The-Fuckening

https://www.fanfiction.net/s/11976567/1/Alphynamalg-And-Dreams

Source: reddit.com/r/eroticliterature/comments/4mlcma/the_alphamalg_series