All right, so anything can theoretically be a monster simply by crossing
the borders of its categorization, but the films do favor the especially
perverse or creepy; hence the preponderance of ambulatory body parts and
cutesy characters gone horribly wrong.
Freaks (1932)--armless, legless, pinheaded freaks.
Fiend Without A Face (1958)--brains with tails.
The Blob (1958)--goo.
Wasp Woman (1960)
Blood Beast Terror (1967)--moth woman.
Blood Freak (1971)--turkey monster.
Octaman (1971)
Beware! The Blob (1972)--goo again.
Attack of the Killer Tomatoes! (1978)--nuclear produce.
Basket Case (1982)--Siamese twins.
Blood Link (1983)--Siamese twins.
The Stuff (1985)--dessert.
Evil Spawn (1987)--werebug.
The Brain (1988)--brain with teeth.
The Blob (1988)--goo re-do.
Scarecrows (1988)
Basket Case II (1990)
Basket Case III (1992)
Leprechaun (1993)
Head of the Family (1996)--you guessed it.
Killer Condom (1998)--German horror-comedy.
SideShow (2000)--female runaways to the carnival.