Basket Case (1982) – Visiting The Vet

conjoined twins (disease or medical condition)

revenge

monster (character species)

monster movie (film genre)

parasitic twin (disease or medical condition)

gore

1980s

80s horror

frank henenlotter (film director)

splatterpunk

splatter film (film genre)

horror (film genre)

horror comedy (film genre)

belial

basket case (film)