Frankenstein Is the Monster

Frankenstein is the man who made the monster, not the monster. In Mary Shelley's 1818 novel, Victor Frankenstein is the scientist who assembles and reanimates a creature, and the creature itself is never given a name; Shelley calls it 'the creature', 'the being', 'the wretch', and famously 'the daemon'. So strictly, the monster is Frankenstein's monster, and the bolt-necked green look comes from the 1931 film and actor Boris Karloff's makeup, not the book, where the creature is described as having translucent yellowish skin and long black hair. People have argued for a century about whether the slip even matters, and some say the doctor is the real monster anyway, which is sort of Shelley's point. But on the plain question, the name belongs to the creator. The creature you are picturing is nameless, which is somehow even sadder than the story already is.