monster

nouns

an imaginary creature usually having various human and animal parts
monster
is a type of (narrower)
a creature of the imagination; a person that exists only in legends or myths or fiction
imaginary being, imaginary creature
someone or something that is abnormally large and powerful
behemoth, colossus, giant, goliath, monster
is derived from
monstrous
a person or animal that is markedly unusual or deformed
freak, lusus naturae, monster, monstrosity
is derived from
monstrous
a cruel wicked and inhuman person
demon, devil, fiend, monster, ogre
is derived from
monstrous
(medicine) a grossly malformed and usually nonviable fetus
monster, teras
is derived from
monstrous