Citizen V is the codename of several fictional superheroes appearing in American comic books published by Marvel Comics. The original incarnation was an obscure hero from the Golden Age of Comic Books, but the character's identity was revived in the modern day in the pages of Thunderbolts. The various incarnations of the character have usually been affiliated with the V-Battalion organization. The "V" in the character's and group's name is the letter "V" - as opposed to the Roman numeral 5 - and is derived from the World War II-era slogan "V for Victory".
The original version of Citizen V was John Watkins, an Englishman who assisted the resistance in Nazi-occupied France. He led a group of freedom fighters called the V-Battalion, the membership of which included Paulette Brazee, also known as the She-Wolf. He was killed in action by Baron Zemo, and Paulette took up the Citizen V identity.
The second version of Citizen V was Paulette Brazee, the French lover of John Watkins and mother of JJ Watkins. During the war, she was a spy sent to romance Baron Zemo. Paulette betrayed Zemo and eventually discovered she was pregnant. When John and the majority of the V Battalion were slaughtered by Zemo, the remaining survivors had Paulette smuggled to England. There Paulette met a red-headed soldier and married. After the V Battalion was reconstituted in 1951, Paulette was given the Citizen V role. The V Battalion began hunting down Nazi war criminals and was allowed to place their secret headquarters Castle Masada in Symkaria. In 1953, Paulette was sent on a mission to Argentina to find Nazi scientist Johann Weimer and bring the scientist to the V Battalion so they could use the Nazi's skills for them. Weimer was murdered by one of the Everlasting, a group of gods who had frequent run-ins with the V Battalion.
The third version of Citizen V is John "JJ" Watkins Jr., the alleged son of John Watkins Sr and Paulette Brazee (although an affair between Paulette and Baron Zemo had been implied). In 1953, he was nine years old so he was presumably born in 1944. Since his father died before he was born and his mother was often away on missions as Citizen V during his childhood, JJ was primarily raised by nannies employed by the V Battalion. In 1971, JJ asked the Shadow King for help in researching the Everlasting. JJ died when his own son John Watkins III was two years old.