Nomad is the name of several superheroes in the Marvel Universe, all of whom, as the name implies, are nomadic in nature.
Steve RogersEditNomad was an identity that was used for a time by Steve Rogers, after he gave up the Captain America identity. After discovering that a high-ranking government official was the leader of the terrorist organization known as the Secret Empire (it was heavily hinted to be President Richard Nixon), Steve Rogers became disillusioned and abandonded his Captain America mantle. Steve later meets with Hawkeye (who is in the guise of The Golden Archer) and is convinced to return to crime fighter, and he does so, now calling himself Nomad.
Loosing the patriotic symbolism and seeing himself as a "man without a country", Nomad traveled the country looking to help people and fight crime.