"V" is an enigmatic anarchistic vigilante plaguing the regime of Norsefire's United Kingdom, using a mask of Guy Fawkes. During the nuclear war that devastated the world, he was imprisoned at the Larkhill Resettlement Camp, where he become the subject of medical experimentation. He was injected with an artificial hormonal compound called Batch-5, and was the only person who survived, though his mind was apparently warped by the procedures. Eventually, he escaped and travelled to London, where he established a hideout and spent four years killing individuals who had worked at Larkhill, but his main plan was to take down the government.
V was created by Alan Moore and David Lloyd, first appearing in V for Vendetta #1 (1988).