Here's an actual court case about parody -- Campbell v. Acuff-Rose. (You could call it THE court case about parody.)
Again, do you see commentary or criticism here? You see humor, but is that the same thing? Is it certainly the same thing? It there enough of it to constitute true "transformative use" in the eyes of the Court? Would you bet a million dollars on it? More importantly, would the creator of this fan film, who bears all of the risks if that judgment is wrong, make that bet?
Parody, like other comment and criticism, may claim fair use. Under the first of the four §107 factors, "the purpose andcharacter of the use, including whether such use is of a commercial nature . . . ," the enquiry focuses on whether the new work merely supersedes the objects of the original creation, or whether and to what extent it is "transformative," altering the original with new expression, meaning, or message. The more transformative the new work, the less will be the significance of other factors, like commercialism, that may weigh against a finding of fair use. The heart of any parodist's claim to quote from existing material is the use of some elements of a prior author's composition to create a new one that, at least in part, comments on that author's work.
Again, do you see commentary or criticism here? You see humor, but is that the same thing? Is it certainly the same thing? It there enough of it to constitute true "transformative use" in the eyes of the Court? Would you bet a million dollars on it? More importantly, would the creator of this fan film, who bears all of the risks if that judgment is wrong, make that bet?