Alan Moore refuses to have anything to do with the movies, and true to his predictions they seriously butchered the character.In the movie incarnation, very little remains of Alan Moore's V, except his hacker/trickster nature and a certain panache.

The literary V is an anarchist, somewhat disdainful of ordinary people's subservience, and decides to destroy the apparatus of the state whether the people want it or not. The book ends with England in chaos. The book hints that a figure like V is always needed, no matter what kind of government you live under.

The movie V is an outlaw, but he's still more of a liberal reformer. He gets rid of the bad leaders, while leaving the state intact, and then gathers people together to witness a symbolic action. In the movie, it's clear that being V is only necessary when you have a bad government, then you can get on with your normal life.

Nevertheless, Moore believes that truly iconic characters take on a life of their own and become humanity's "gods". And in some ways the V-figure is evolving beyond the media portrayals. Not as prickly and disengaged from humanity as the book, while jettisoning the 9-11 truther nonsense of the movie. Maybe heading for true "trickster god" status; a friend of humanity that destroys structures that constrain natural developments.