The original Nomad is an alternate identity that Steve Rogers adopts after he abandons the Captain America costume and title. In Captain America #180 Rogers becomes disillusioned with the United States government, when he discovers that a high ranking government official is the leader of the terrorist organization known as the Secret Empire. Rogers then decides to abandon his Captain America identity, feeling that he cannot continue to serve America after this latest discovery has shattered his faith in the nation's status. However, a confrontation with Hawkeye forces Rogers to realize that he cannot abandon a life of heroism, and he subsequently takes on the name "Nomad" adopting a new dark blue and yellow uniform with no patriotic markings on it at all. This identity is short-lived, with Rogers maintaining it for a mere four issues of the comic to varying degrees of success; he even trips over his own cape at one point. At the conclusion of Captain America #184 Rogers returns to the role of Captain America when he realizes that he could champion America's ideals without blindly supporting its government.
Edward Ferbel
Introduced in Captain America #261, the second Nomad was Edward Ferbel, a short-lived character who is given the Nomad costume and equipment by the Red Skull in an effort to discredit Captain America. He is killed by an agent of the Skull, the Ameridroid, in Captain America #263.
Jack Monroe
The third and best known Nomad is Jack Monroe, who was formerly known as the third Bucky. He was created by writer Steve Englehart and artist Sal Buscema in Captain America #153.
Rikki Barnes
After the events of the Onslaught Reborn mini-series, a version of Rikki Barnes, the female Bucky established in the Heroes RebornCaptain America series, now resides in the mainstream Marvel Universe, and has befriended the Young Avenger known as Patriot in the hopes of contacting the new Captain America. In September 2009, Rikki Barnes took on the identity of Nomad in the mini-series, Nomad: Girl Without A World, by Sean McKeever and David Baldeon.
Ian Rogers
While trapped in the mysterious Dimension Z, Captain America rescues Leopold, the infant son of Arnim Zola. Raising the child under the name "Ian", he manages to evade Zola's forces for eleven years, until Ian is accidentally shot and apparently killed by Sharon Carter. After Captain America escapes Dimension Z, Ian is revealed to have survived and taken up a costume and shield similar to that of his adoptive father. Now calling himself Nomad, Ian acts as the defender of Dimension Z. During the AXIS storyline, Nomad assists Steve Rogers and Spider-Man in rescuing Loki in Las Vegas.