The Frankenstein myth of creature turning on creator is centuries if not millennia old. But only recently, under the impact of the cybernetic revolution, has this fantasy entered the realm of the possible. This paper explores the legal ramifications of Artificial Intelligence (AI) with specific emphasis on “humanoid” criminality. Following a review of the actual (or theoretically proven) powers of artificially intelligent machine automata and the likely advances to be made in the future, four general categories of AI harmful behaviour are suggested, with illustrations from cybernetic research and science fiction. An analysis is made of the jurisprudential principles underlying several legal categories already existent, upon which future cybernetic law may be based.